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dimension of the morphisme of two characters

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#group-theory #representation-theory
181
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Are valued-quiver species and combinatorial species related?

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#category-theory #representation-theory #quiver #combinatorial-species
483
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Character Table from Generators of a Group

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#group-theory #representation-theory #characters
122
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Invariant subspace of a representation of a Lie algebra

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#representation-theory #lie-algebras
62
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Convolution of probabilities on finite groups

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#group-theory #finite-groups #representation-theory #convolution
550
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Obtaining all structure constants of $ \mathfrak{su}(N) $

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#linear-algebra #abstract-algebra #representation-theory #lie-groups #lie-algebras
319
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Simple coroots in a non-reduced root system do not form a base?

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#representation-theory #lie-algebras #root-systems
69
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Normal Subgroup Representation Theory

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#representation-theory #normal-subgroups
183
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If the off-diagonal entries of a positive-definite symmetric matrix $A$ are $\leq 0$, then $A^{-1}$ has positive entries

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#linear-algebra #representation-theory #lie-algebras #matrix-decomposition #root-systems
58
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Is $R$ an algebra or not?

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#ring-theory #modules #representation-theory
298
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The definition of a coroot for non-split reductive groups?

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#representation-theory #lie-algebras #root-systems #reductive-groups
550
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Proving the trace of a representation is equal to zero

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#abstract-algebra #group-theory #representation-theory #characters
65
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Hom and Tensoring with the Dual in Category O

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#representation-theory #lie-algebras
143
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Why are the morphisms in an Auslander-Reiten triangle irreducible?

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#abstract-algebra #category-theory #representation-theory #triangulated-categories
1.7k
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Tensor product of two irreducible representations is not irreducible

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#abstract-algebra #group-theory #finite-groups #representation-theory #examples-counterexamples

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