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15
85
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In category theory, should morphisms apply to specific objects or to any objects in the category?

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#category-theory #morphism
184
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Number of ring endomorphisms of $\mathbb{Z}[\zeta_n]$

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#abstract-algebra #ring-theory #morphism
125
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Is there example of equalizer that is not injective?

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#abstract-algebra #group-theory #category-theory #examples-counterexamples #morphism
194
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Proving that all fibers of a morphism $\varphi:X\to\Bbb{P}^1$ are connected

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#algebraic-geometry #connectedness #fibration #morphism
167
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Ramification Locus and Ramification Index

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#algebraic-geometry #ramification #morphism
148
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Connecting Morphism of Exact Triangle of Cohomology

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#algebraic-topology #homology-cohomology #homological-algebra #morphism
54
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Understanding a detail of a proof about topological compactifications

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#general-topology #compactness #compactification #morphism #zero-dimensionality
47
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Modified general abstract non-sense

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#category-theory #morphism #module-isomorphism
62
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An elegant closure property of uniform distributions?

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#probability #uniform-distribution #ring-homomorphism #polynomial-rings #morphism
46
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General Fibre of a Morphism of Affine Algebraic Varieties.

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#algebraic-geometry #affine-varieties #morphism
77
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$2$ definitions of a reflective subcategory

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#category-theory #adjoint-functors #morphism
36
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Are morphisms in a category single-valued/functional relations?

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#category-theory #terminology #relations #morphism
165
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Simple group-like objects in other categories

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#category-theory #morphism
332
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Are noncommutative diagrams well defined?

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#group-theory #category-theory #group-isomorphism #morphism
89
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A morphism in $Hom (a,a)$ which is not the identity morphism

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#category-theory #functors #morphism

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