Traces and categorification - Revision history

Rag12843 at 09:31, 3 November 2022

2022-11-03T09:31:12Z

← Older revision		Revision as of 11:31, 3 November 2022
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	''Traces and categorification''		''Traces and categorification''

	Bastiaan Cnossen		Bastiaan Cnossen (Bonn)

	The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of representations, through fixed-point formulas, to various geometric transfer maps. The theory of oo-categories and higher algebra allows one to organize many of these occurrences of the trace within a formal unified calculus. This calculus is more intricate and elaborate than one might expect, because some of its fundamental features are revealed only by ''categorification'', leading to investigations of traces in (oo,n)-categories.		''Abstract'': The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of representations, through fixed-point formulas, to various geometric transfer maps. The theory of oo-categories and higher algebra allows one to organize many of these occurrences of the trace within a formal unified calculus. This calculus is more intricate and elaborate than one might expect, because some of its fundamental features are revealed only by ''categorification'', leading to investigations of traces in (oo,n)-categories.

	In this talk, I will describe a joint work with Shachar Carmeli, Maxime Ramzi and Lior Yanovski that sets up a general "character theory" for studying, among other things, the interaction of traces with colimits by an "induced character formula" (generalizing and refining work of Ponto-Shulman). The interaction between traces and categorification plays a key role in our approach. I will also explain how this theory can be applied to the study of the Becker-Gottlieb transfer and of topological Hochschild homology of Thom spectra.		In this talk, I will describe a joint work with Shachar Carmeli, Maxime Ramzi and Lior Yanovski that sets up a general "character theory" for studying, among other things, the interaction of traces with colimits by an "induced character formula" (generalizing and refining work of Ponto-Shulman). The interaction between traces and categorification plays a key role in our approach. I will also explain how this theory can be applied to the study of the Becker-Gottlieb transfer and of topological Hochschild homology of Thom spectra.

Rag12843 at 09:29, 3 November 2022

2022-11-03T09:29:56Z

← Older revision		Revision as of 11:29, 3 November 2022
Line 1:		Line 1:
	Traces and categorification		''Traces and categorification''

	Bastiaan Cnossen		Bastiaan Cnossen

	The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of representations, through fixed-point formulas, to various geometric transfer maps. The theory of oo-categories and higher algebra allows one to organize many of these occurrences of the trace within a formal unified calculus. This calculus is more intricate and elaborate than one might expect, because some of its fundamental features are revealed only by ''categorification'', leading to investigations of traces in (oo,n)-categories.		The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of representations, through fixed-point formulas, to various geometric transfer maps. The theory of oo-categories and higher algebra allows one to organize many of these occurrences of the trace within a formal unified calculus. This calculus is more intricate and elaborate than one might expect, because some of its fundamental features are revealed only by ''categorification'', leading to investigations of traces in (oo,n)-categories.

	In this talk, I will describe a joint work with Shachar Carmeli, Maxime Ramzi and Lior Yanovski that sets up a general "character theory" for studying, among other things, the interaction of traces with colimits by an "induced character formula" (generalizing and refining work of Ponto-Shulman). The interaction between traces and categorification plays a key role in our approach. I will also explain how this theory can be applied to the study of the Becker-Gottlieb transfer and of topological Hochschild homology of Thom spectra.		In this talk, I will describe a joint work with Shachar Carmeli, Maxime Ramzi and Lior Yanovski that sets up a general "character theory" for studying, among other things, the interaction of traces with colimits by an "induced character formula" (generalizing and refining work of Ponto-Shulman). The interaction between traces and categorification plays a key role in our approach. I will also explain how this theory can be applied to the study of the Becker-Gottlieb transfer and of topological Hochschild homology of Thom spectra.

Rag12843: Created page with "Traces and categorification Bastiaan Cnossen The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of repres..."

2022-11-03T09:29:20Z

Created page with "Traces and categorification Bastiaan Cnossen The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of repres..."

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Traces and categorification
Bastiaan Cnossen

The trace of a linear operator is simple to define, yet appears all over mathematics in many disguises: from characters of representations, through fixed-point formulas, to various geometric transfer maps. The theory of oo-categories and higher algebra allows one to organize many of these occurrences of the trace within a formal unified calculus. This calculus is more intricate and elaborate than one might expect, because some of its fundamental features are revealed only by ''categorification'', leading to investigations of traces in (oo,n)-categories.

In this talk, I will describe a joint work with Shachar Carmeli, Maxime Ramzi and Lior Yanovski that sets up a general "character theory" for studying, among other things, the interaction of traces with colimits by an "induced character formula" (generalizing and refining work of Ponto-Shulman). The interaction between traces and categorification plays a key role in our approach. I will also explain how this theory can be applied to the study of the Becker-Gottlieb transfer and of topological Hochschild homology of Thom spectra.