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SUMMARY:Tara Brough (Universidade NOVA de Lisboa)
DTSTART:20200617T103000Z
DTEND:20200617T113000Z
DTSTAMP:20260423T011111Z
UID:YSseminar/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/YSseminar/6/
 ">Context-free word problem semigroups</a>\nby Tara Brough (Universidade N
 OVA de Lisboa) as part of York semigroup seminar\n\n\nAbstract\nI will giv
 e an overview of joint work with Alan Cain and Markus Pfeiffer on semigrou
 ps with context-free word problem\, covering at least the following:\n- Wh
 at does it mean for a semigroup to have context-free word problem?\n- Is t
 here a nice generalisation to semigroups of Muller and Schupp's famous res
 ult that a group has context-free word problem if and only if it is virtua
 lly free?\n- To what extent is the class of semigroups with context-free w
 ord problem closed under standard semigroup constructions (free product\, 
 direct product\, Rees matrix etc.)?\n
LOCATION:https://researchseminars.org/talk/YSseminar/6/
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