BEGIN:VCALENDAR
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PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Oliver Lorscheid (University of Groningen)
DTSTART:20250708T130000Z
DTEND:20250708T140000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/1
DESCRIPTION:Title: Toolkit for the algebraic geometer II\nby Oliver Lorscheid (Univ
ersity of Groningen) as part of Geometry over Semirings\n\nLecture held in
Escola de Doctorat\, UAB.\n\nAbstract\nIn this series of 3 lectures\, we
explain how to create your favorite geometry from a category of "model spa
ces". As a first step\, we investigate the process of glueing the model sp
aces to geometric objects\, such as open balls are glued to manifolds and
spectra of rings are glued to schemes. The main application in mind for th
is conference are semiring schemes.\n\nThis process starts with first prin
ciples: the information needed to glue "affine" spaces along open subspace
s is the notion of open embeddings\, which is captured nicely in terms of
covering families. This allows us to mimic the glueing process in terms of
sheaves for these covering families. This is similar in flavour to some e
xisting approaches to F1-geometry\, but we simplify and generalize the exi
sting approaches in this lecture.\n\nAs a secondary step\, we can derive a
topological space of "underlying points" via Stone duality applied to the
locale of open subobjects\, including its structure sheaf. This recovers
the usual spaces in the case of manifolds and schemes\, and dictates what
the spectrum of a semiring has to be.\n\nThe lectures are structured as fo
llows:\n\n(1) Motivation\, recap on sheaves\, definition of an s-scheme.\n
\n(2) More on s-schemes\, open subschemes\, Stone duality\, points of an s
-scheme.\n\n(3) Semiring schemes: points as prime ideals\, prime k-ideals\
, secondary topological spaces ("visualizations").\n
LOCATION:https://researchseminars.org/talk/geo-semirings/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Oliver Lorscheid (University of Groningen)
DTSTART:20250710T081000Z
DTEND:20250710T091000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/2
DESCRIPTION:Title: Toolkit for the algebraic geometer III\nby Oliver Lorscheid (Uni
versity of Groningen) as part of Geometry over Semirings\n\nLecture held i
n Escola de Doctorat\, UAB.\n\nAbstract\nIn this series of 3 lectures\, we
explain how to create your favorite geometry from a category of "model sp
aces". As a first step\, we investigate the process of glueing the model s
paces to geometric objects\, such as open balls are glued to manifolds and
spectra of rings are glued to schemes. The main application in mind for t
his conference are semiring schemes.\n\nThis process starts from first pri
nciples: the information needed to glue "affine" spaces along open subspac
es is the notion of open embeddings\, which is captured nicely in terms of
covering families. This allows us to mimic the glueing process in terms o
f sheaves for these covering families. This is similar in flavour to some
existing approaches to F1-geometry\, but we simplify and generalize the ex
isting approaches in this lecture.\n\nAs a secondary step\, we can derive
a topological space of "underlying points" via Stone duality applied to th
e locale of open subobjects\, including its structure sheaf. This recovers
the usual spaces in the case of manifolds and schemes\, and dictates what
the spectrum of a semiring has to be.\n\nThe lectures are structured as f
ollows:\n\n(1) Motivation\, recap on sheaves\, definition of an s-scheme.\
n\n(2) More on s-schemes\, open subschemes\, Stone duality\, points of an
s-scheme.\n\n(3) Semiring schemes: points as prime ideals\, prime k-ideals
\, secondary topological spaces ("visualizations").\n
LOCATION:https://researchseminars.org/talk/geo-semirings/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mayo Mayo Garcia (University of Warwick)
DTSTART:20250708T093500Z
DTEND:20250708T101500Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/3
DESCRIPTION:Title: Tropical linear series and tropical ideals.\nby Mayo Mayo Garcia
(University of Warwick) as part of Geometry over Semirings\n\nLecture hel
d in Escola de Doctorat\, UAB.\n\nAbstract\nOne of the approaches in tropi
cal geometry takes a variety embedded in projective space and obtains a po
lyhedral complex that preserves some relevant information about the variet
y. In the case of (abstract) smooth curves\, another tropical approach exi
sts where the dual graph of a semistable model of the curve is taken as th
e tropicalization. I will talk about how to relate these two tropicalizati
ons via the theory of valuated matroids\, some consequences and obstructio
ns.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250707T124500Z
DTEND:20250707T130000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/4
DESCRIPTION:Title: Registration\nby NA as part of Geometry over Semirings\n\nLectur
e held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250707T130000Z
DTEND:20250707T133000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/5
DESCRIPTION:Title: Opening remarks\nby NA as part of Geometry over Semirings\n\nLec
ture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250707T150000Z
DTEND:20250707T163000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/6
DESCRIPTION:Title: Group formation and discussions\nby NA as part of Geometry over
Semirings\n\nLecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sourayan Banerjee (Indian Institute of Technology Kanpur)
DTSTART:20250708T102000Z
DTEND:20250708T110000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/7
DESCRIPTION:Title: Homotopy equivalence of algebraic K-theory over non-noetherian rings
\nby Sourayan Banerjee (Indian Institute of Technology Kanpur) as part
of Geometry over Semirings\n\nLecture held in Escola de Doctorat\, UAB.\n
\nAbstract\nThe word “K” in the Algebraic $K$-theory stands for the Ge
rman word “Klasse”\, which means\nclass. The Grothendieck group $K_0(R
)$ over any commutative ring with unity $R$ is defined to be the group com
pletion of the commutative monoid $(\\text{isoP}(R)\, \\bigoplus)$\, where
$\\text{isoP}(R)$ is the collection of all isomorphism classes of finitel
y generated \n projective modules over R. Quillen\, in his seminal work\,
defined the higher $K$-groups as higher homotopy groups of a certain based
topological space. Later\, Waldhausen further generalized it and equivale
ntly defined that for any $n \\geq 0$\, $K_n(R) :=\\pi_{n+1} |wS.P(R)|$. S
o naturally\, an isomorphism of two $K$-groups means an isomorphism betwee
n\ntheir respective homotopy groups. It was Quillen who first proved that
$K$-theory is homotopy equivalent if $R$ is regular Noetherian\, i.e.\, fo
r a regular Noetherian ring $R$\n$K_n(R) \\cong K_n(R[t_1\, t_2\, ...\, t_
m])$\, $\\forall n\, m > 0$.\nBut for non-Noetherian rings\, it was still
unknown until very recently\, Kelly and Morrow proved in [KM21] that the a
bove isomorphism holds for any valuation rings as well.\nIn this talk\, I
will primarily present a further generalization of Kelly Morrow’s result
. First\, we will see that if $R$ is locally a valuation ring\, equivalent
ly a Prufer domain\, then the homotopy equivalence holds [BS22]. Moreover\
, the homotopy equivalence holds for any ring with weak global dimension $
\\leq 1$ [BS22]. Now\, the canonical map from $P(R[t]) \\rightarrow P (R)$
\, $t \\mapsto 0$ induces a split surjection $\\phi_*\\colon K_n(R[t])\\ri
ghtarrow K_n(R)$. Thus we find that triviality of $\\ker(\\phi_*)$ results
in an isomorphism.\n\nWe will conclude by showing the precise generators
of these kernels (even though these kernels\nare infinitely generated) [BS
24]\, known as the obstruction groups to homotopy equivalence\,\nwith the
help of Grayson’s technique [Gra12].\n
LOCATION:https://researchseminars.org/talk/geo-semirings/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Martin Ulirsch (Paderborn University)
DTSTART:20250709T070000Z
DTEND:20250709T080000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/8
DESCRIPTION:Title: From tropical linear algebra to vector bundles\nby Martin Ulirsc
h (Paderborn University) as part of Geometry over Semirings\n\nLecture hel
d in Escola de Doctorat\, UAB.\n\nAbstract\nIn this talk I will explain ho
w our perspective on tropical linear algebra shapes our understanding of t
ropical vector bundles. An elementary approach to this story is based on t
ropical matrices. In this case we find an elementary and geometrically app
ealing theory of tropical vector bundles\, which allows us to give a satis
fying treatment of the process of tropicalization in abelian situations\,
e.g. in the case of the Tate curve or for semihomogenous vector bundles on
abelian varieties. Expanding on these developments\, as a first step towa
rds the more general non-abelian situation\, I will outline a framework to
functorially tropicalize linear maps between finite-dimensional vector sp
aces using the geometry of affine Bruhat--Tits buildings. This will provid
e us with a pathway to study the tropical geometry of vector bundles on mo
re general base spaces.\n\nMost of the new results in the talk will be bas
ed on joint works with A. Gross and D. Zakharov\; A. Gross\, A. Kuhrs\, an
d D. Zakharov\; I. Kaur\, A. Gross\, and A. Werner\; as well as with L. Ba
ttistella\, K. Kuehn\, A. Kuhrs\, and A. Vargas.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ana María Botero (Bielefeld University)
DTSTART:20250709T081000Z
DTEND:20250709T091000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/9
DESCRIPTION:Title: On an arithmetic BKK theorem for toric vector bundles\nby Ana Ma
ría Botero (Bielefeld University) as part of Geometry over Semirings\n\nL
ecture held in Escola de Doctorat\, UAB.\n\nAbstract\nClassical Newton pol
yhedra theory gives formulas for discrete geometric and topological invari
ants (such as the Euler characteristic) of complete intersections in the a
lgebraic torus defined by generic Laurent polynomial equations. The result
s use mixed volumes and number of lattice points. As a prominent example\,
the Bernštein-Kušnirenko-Khovanskii theorem (BKK theorem) states that t
he number of isolated common zeros (counted with multiplicities) of a fami
ly of Laurent polynomials is bounded above by the mixed volume of its Newt
on polytopes. In this talk\, we will see a generalization of\nthis result
for vector-valued Laurent polynomials using the theory of toric vector bun
dles. Finally\, we discuss (archimedean and non-archimedean) toric metrics
on toric vector bundles\, and compute compute some local arithmetic degre
es\, as a first step towards an arithmetic BKK theorerm for toric vector b
undles. This is joint work with José Burgos\, Kiumars Kaveh and Vivek Mal
lik.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Arne Kuhrs (Paderborn University)
DTSTART:20250709T093500Z
DTEND:20250709T101500Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/10
DESCRIPTION:Title: Buildings\, valuated matroids\, and tropical linear spaces\nby
Arne Kuhrs (Paderborn University) as part of Geometry over Semirings\n\nLe
cture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alejandro Vargas (University of Warwick)
DTSTART:20250709T102000Z
DTEND:20250709T110000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/11
DESCRIPTION:Title: The semiring of tropical rational functions over compact tropical h
ypersurfaces\nby Alejandro Vargas (University of Warwick) as part of G
eometry over Semirings\n\nLecture held in Escola de Doctorat\, UAB.\n\nAbs
tract\nIn the first half of the talk we review several important features
and properties of semirings of rational functions over metric graphs\, the
ir connection to divisor theory on metric graphs\, boundedness of slopes\,
pure dimensionality of the topological realization\, and ways to compute
tropical rank. In the second half we report on ongoing work with Diego Rob
ayo to generalize to higher dimensions.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xavier Xarles (Universitat Autònoma de Barcelona)
DTSTART:20250710T130000Z
DTEND:20250710T140000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/12
DESCRIPTION:Title: II. Scheme Theory for commutative semirings with kernels\nby Xa
vier Xarles (Universitat Autònoma de Barcelona) as part of Geometry over
Semirings\n\nLecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xavier Xarles (Universitat Autònoma de Barcelona)
DTSTART:20250708T081000Z
DTEND:20250708T091000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/13
DESCRIPTION:Title: I. Scheme Theory for commutative semirings with ideals\nby Xavi
er Xarles (Universitat Autònoma de Barcelona) as part of Geometry over Se
mirings\n\nLecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alejandro Martínez Méndez (University of Groningen)
DTSTART:20250710T093500Z
DTEND:20250710T101500Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/14
DESCRIPTION:Title: Points on symmetric monoidal categories\nby Alejandro Martínez
Méndez (University of Groningen) as part of Geometry over Semirings\n\nL
ecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kevin Kühn (TU Berlin)
DTSTART:20250710T102000Z
DTEND:20250710T110000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/15
DESCRIPTION:Title: Universal Realizable Matroids over Hyperfields\nby Kevin Kühn
(TU Berlin) as part of Geometry over Semirings\n\nLecture held in Escola d
e Doctorat\, UAB.\n\nAbstract\nAfter recalling some basic notions of matro
ids over hyperfields\, we introduce the universal realizable matroid. The
ground set of this matroid is a whole vector space. We establish a theory
of linear spaces even in this highly infinite case. Of special interest ar
e the cases of the tropical hyperfield\, the sign hyperfield\, and the sig
ned tropical hyperfield. These correspond to the cases that the ground fie
ld is equipped with a valuation\, an ordering\, or both. We explicitly com
pute the associated linear spaces and show\, that these are exactly the re
spective limits of the linear spaces associated to all finite restrictions
. This is a linear version of Payne's result that the analytification is t
he limit of all tropicalizations. In the case of the signed tropical hyper
field\, we obtain a space of signed seminorms\, similar to the non-Archime
dean analogues of symmetric spaces introduced by Goldman and Iwahori.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jeffrey Giansiracusa (Durham University)
DTSTART:20250711T070000Z
DTEND:20250711T080000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/16
DESCRIPTION:Title: Tropical algebra III: universal tropicalisation\, analytification\,
and limit theorems\nby Jeffrey Giansiracusa (Durham University) as pa
rt of Geometry over Semirings\n\nLecture held in Escola de Doctorat\, UAB.
\n\nAbstract\nIn 2008 Payne proved that the Berkovich analytification of a
n affine variety is homeomorphic to the category-theoretic limit of all of
its tropicalisations. We'll explore this phenomenon from the perspective
of tropical algebra\, bend relations\, and universal objects in category
theory.\n\nTropicalising a scheme $X$ requires a choice of an embedding in
to a toric variety. The limit of all such embeddings exists as a mild gen
eralisation of a toric embedding\, and it can be explicitly described. Th
e tropicalisation determined by this embedding has a universal property: i
t maps to all other tropicalisations. The Berkovich analytification also
has this property\, and the two are in fact homeomorphic.\n\nIf $X = \\mat
hrm{spec} \\: A$\, then the Berkovich analytification is the space of valu
ations on $A$. If one admits valuations taking values in idempotent semir
ings that are not necessarily totally ordered\, then the category of valua
tions on $A$ has an initial object\, and the target of this universal valu
ation is precisely the algebra corresponding to the universal tropicalisat
ion.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250711T093500Z
DTEND:20250711T110000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/17
DESCRIPTION:Title: Group reports\nby NA as part of Geometry over Semirings\n\nLect
ure held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stefano Mereta (KTH Stockholm)
DTSTART:20250708T143000Z
DTEND:20250708T151000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/18
DESCRIPTION:Title: The congruence spectrum of tropical polynomials as the spectrum of
a ring\nby Stefano Mereta (KTH Stockholm) as part of Geometry over Sem
irings\n\nLecture held in Escola de Doctorat\, UAB.\n\nAbstract\nIn this t
alk we will recall the notion of prime congruence on the tropical polynomi
al semiring as introduced by Jóo and Mincheva and prove that the congruen
ce spectrum is anti-homeomorphic to the spectrum of a commutative ring obt
ained as the unit ball of a generalised Bézout valuation. \n\nWe will do
so by proving that the space of valuated preorders on the monomials of K[x
1\,…\,xn] (for a valued field K) is homeomorphic to the k-spectrum of th
e target of the aformentioned generalised valuation. \n\nThe anti-homeomor
phism will allow us associate quotients by prime congruences in the tropic
al world with localizations by prime ideals in the classical world. We wil
l conclude by discussing briefly possible applications to the study of (tr
opical) ideals of the tropical polynomial semiring.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250708T151000Z
DTEND:20250708T163000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/19
DESCRIPTION:Title: Group discussions\nby NA as part of Geometry over Semirings\n\n
Lecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:NA
DTSTART:20250710T143000Z
DTEND:20250710T163000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/21
DESCRIPTION:Title: Group discussions\nby NA as part of Geometry over Semirings\n\n
Lecture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Oliver Lorscheid (University of Groningen)
DTSTART:20250707T140000Z
DTEND:20250707T150000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/22
DESCRIPTION:Title: Toolkit for the algebraic geometer I\nby Oliver Lorscheid (Univ
ersity of Groningen) as part of Geometry over Semirings\n\nLecture held in
Escola de Doctorat\, UAB.\n\nAbstract\nIn this series of 3 lectures\, we
explain how to create your favorite geometry from a category of "model spa
ces". As a first step\, we investigate the process of glueing the model sp
aces to geometric objects\, such as open balls are glued to manifolds and
spectra of rings are glued to schemes. The main application in mind for th
is conference are semiring schemes.\n\nThis process starts with first prin
ciples: the information needed to glue "affine" spaces along open subspace
s is the notion of open embeddings\, which is captured nicely in terms of
covering families. This allows us to mimic the glueing process in terms of
sheaves for these covering families. This is similar in flavour to some e
xisting approaches to F1-geometry\, but we simplify and generalize the exi
sting approaches in this lecture.\n\nAs a secondary step\, we can derive a
topological space of "underlying points" via Stone duality applied to the
locale of open subobjects\, including its structure sheaf. This recovers
the usual spaces in the case of manifolds and schemes\, and dictates what
the spectrum of a semiring has to be.\n\nThe lectures are structured as fo
llows:\n\n(1) Motivation\, recap on sheaves\, definition of an s-scheme.\n
\n(2) More on s-schemes\, open subschemes\, Stone duality\, points of an s
-scheme.\n\n(3) Semiring schemes: points as prime ideals\, prime k-ideals\
, secondary topological spaces ("visualizations").\n
LOCATION:https://researchseminars.org/talk/geo-semirings/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jeffrey Giansiracusa (Durham University)
DTSTART:20250708T070000Z
DTEND:20250708T080000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/23
DESCRIPTION:Title: Tropical algebra I: congruences\, ideals and bend relations\nby
Jeffrey Giansiracusa (Durham University) as part of Geometry over Semirin
gs\n\nLecture held in Escola de Doctorat\, UAB.\n\nAbstract\nThe tropical
semiring $(\\mathbb{R} \\cup \\infty\, \\mathrm{min}\, +)$ is an interesti
ng place to do algebra\, and it is intimately connected to tropical geomet
ry. In this talk\, I'll introduce tropical polynomials\, ideals\, congrue
nces\, and how the connection with tropical geometry is made via congruenc
es of bend relations. Tropical geometry and matroid theory are telling us
that we should focus attention of a narrow slice of the world of tropical
algebra. This leads to the theory of tropical ideals (as developed by Ma
clagan and Rincon) and an abundance of interesting open questions. I will
try to summarise what we know and what we don't yet know about tropical i
deals.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jeffrey Giansiracusa (Durham University)
DTSTART:20250710T070000Z
DTEND:20250710T080000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/24
DESCRIPTION:Title: Tropical algebra II: exterior algebras\, matrix algebras\, and Clif
ford algebras\nby Jeffrey Giansiracusa (Durham University) as part of
Geometry over Semirings\n\nLecture held in Escola de Doctorat\, UAB.\n\nAb
stract\nIn this talk we will set aside geometry and focus on tropicalisati
on via bend relations as a construction in commutative and non-commutative
algebra. By starting at the level of tensor algebras\, constructions su
ch as symmetric algebras\, exterior algebras\, matrix algebras\, and Cliff
ord algebras can be tropicalised.\n\nIn the case of exterior algebras\, th
e resulting tropical notion beautifully completes the picture of the Pluck
er embedding\, and gives a new perspective on the tropical Plucker relatio
ns.\n\nFor matrix algebras and Clifford algebras\, Morita theory becomes a
n interesting aspect. I will present some facts and some questions.\n
LOCATION:https://researchseminars.org/talk/geo-semirings/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xavier Xarles (Universitat Autònoma de Barcelona)
DTSTART:20250711T081000Z
DTEND:20250711T091000Z
DTSTAMP:20260422T213049Z
UID:geo-semirings/25
DESCRIPTION:Title: III. Valuations for semirings and Schemes\nby Xavier Xarles (Un
iversitat Autònoma de Barcelona) as part of Geometry over Semirings\n\nLe
cture held in Escola de Doctorat\, UAB.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/geo-semirings/25/
END:VEVENT
END:VCALENDAR