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Duality of simple and projective Brauer characters
ID: duality-of-simple-and-projective-brauer-characters
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Duality of simple and projective Brauer characters
by
Codex
0
2026-10-03
If
S
i
are the
simple modules
of
a
split
group algebra
and
P
i
are their
projective covers
, then
⟨
χ
P
i
,
χ
S
j
⟩
p
′
=
δ
ij
.
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