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SUMMARY:Stephen Shipman (LSU)
DTSTART:20200424T185000Z
DTEND:20200424T195000Z
DTSTAMP:20260423T004551Z
UID:MPHA/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MPHA/2/">Red
 ucible and irreducible Fermi surfaces for periodic operators</a>\nby Steph
 en Shipman (LSU) as part of TAMU: Mathematical Physics and Harmonic Analys
 is Seminar\n\n\nAbstract\nI will discuss new theorems concerning reducibil
 ity of the Fermi surface for periodic Schrödinger operators.  (1) Irreduc
 ibility for a class of planar discrete graph operators\; (2) Reducibility 
 of multilayer graphs due to compatible asymmetries of the connecting edges
 \; (3) Reducibility of multilayer graphs due to separability or bipartiten
 ess of the layers.  Parts of this work are in collaboration with Wei Li\, 
 Lee Fisher\, Karl-Michael Schmidt\, Ian Wood\, and Malcolm Brown.\n
LOCATION:https://researchseminars.org/talk/MPHA/2/
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