Manchester Algebra Seminar -  Markus Linckelmann - On degree -1 operators in cohomology
	
		
		
			
		
					| Dates: | 10 March 2020 | 
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							| Times: | 14:00 - 15:00 | 
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	| What is it: | Seminar | 
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	| Organiser: | Department of Mathematics | 
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	| Who is it for: | University staff, Current University students | 
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	                	Speaker: Markus Linckelmann
Title: On degree -1 operators in cohomology
Abstract:
We describe an elementary construction principle for operators of degree -1 on Ext-spaces of modules. We apply this to finite group cohomology, and describe in particular the BV operator on the Hochschild cohomology of a finite group algebra in terms of this construction principle. We use this to calculate the Lie algebra structure of the first Hochschild cohomology of certain finite p-group algebras. This is joint work with Radha Kessar and Dave Benson.
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Time: 2pm
Place: FA1
There will be tea and biscuits at 1:45. All are welcome.
	 
	
		
		
		
	
	
		
	
	
	
		
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	Frank Adams 1 (FA1)
	Alan Turing Building
	
	Manchester