Difference between revisions of "Glossary"
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This page will contain an alphabetical glossary of terms used. | This page will contain an alphabetical glossary of terms used. | ||
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| + | === CFSG === | ||
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| + | The classification of finite simple groups. | ||
=== # lifts / <math>\mathcal{O}</math> === | === # lifts / <math>\mathcal{O}</math> === | ||
Revision as of 17:17, 23 September 2018
This page will contain an alphabetical glossary of terms used.
Contents
CFSG
The classification of finite simple groups.
# lifts / [math]\mathcal{O}[/math]
The number of [math]\mathcal{O}[/math]-Morita equivalence classes of blocks reducing to a representative of the given [math]k[/math]-class.
Picard group
Let [math]R[/math] be a commutative ring and [math]A[/math] an [math]R[/math]-algebra. The Picard group [math]{\rm Pic}_R(A)[/math] has elements isomorphism classes of [math]A[/math]-[math]A[/math]-bimodules inducing a Morita equivalence, with multiplication given by taking tensor products over [math]A[/math].
Possible Brauer tree (for a given cyclic defect group)
Given a cyclic [math]p[/math]-group [math]P[/math], the Brauer trees whose vertex multiplicities add to [math]|P|[/math], where non-exceptional vertices are regarded as having multiplicity [math]1[/math].
