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15
138
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Explicit formula for the equalizer of coalgebras

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#category-theory #hopf-algebras #coalgebras #graded-algebras #differential-graded-algebras
116
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Is a coalgebra comodule cosemisimple if and only if every subcomodule is a direct summand?

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#coalgebras #comodules
50
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Every coalgebra is the quotient of a cosemisimple.

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#proof-verification #coalgebras
69
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Wedge product of coalgebras

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#abstract-algebra #commutative-algebra #noncommutative-algebra #coalgebras
121
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Subcoalgebra generated by an element

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#quaternions #dual-spaces #coalgebras
77
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Primitive elements in $k[x]$

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#abstract-algebra #hopf-algebras #coalgebras
71
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$\times$ versus $\otimes$ in Definition of $K$-Algebra

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#hopf-algebras #algebras #coalgebras
96
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Sweedler Notation: limitations and left comodule version.

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#abstract-algebra #notation #hopf-algebras #coalgebras
199
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Counterexample to the fundamental theorem of comodules

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#reference-request #examples-counterexamples #coalgebras #comodules
179
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Confusion about dual of comodule

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#representation-theory #hopf-algebras #coalgebras
777
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Are there always nontrivial primitive elements in a Hopf algebra?

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#abstract-algebra #lie-algebras #hopf-algebras #coalgebras
98
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Reference for $F$-algebras and induction?

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#reference-request #category-theory #induction #universal-algebra #coalgebras
401
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Reference for understanding coalgebra

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#reference-request #universal-algebra #coalgebras
221
Views

Do coalgebras arise outside the study of bi/Hopf-algebras?

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#abstract-algebra #category-theory #motivation #hopf-algebras #coalgebras
99
Views

What are coquantales?

Published on
#category-theory #monoidal-categories #coalgebras

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