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15
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${(F^*)}^{-1}(m)$ is maximal ideal where $m$ is maximal

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#abstract-algebra #algebraic-geometry #ring-theory #maximal-and-prime-ideals #morphism
183
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Is there a notion of a transversal of subobjects?

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#category-theory #functors #morphism #forgetful-functors
147
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Do subobjects in concrete categories correspond to subsets?

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#category-theory #examples-counterexamples #functors #morphism #forgetful-functors
927
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Linear subspaces of projective space.

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#algebraic-geometry #projective-space #morphism
161
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What are the pushouts and coequalizers in Hausdorff spaces?

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#algebraic-topology #category-theory #morphism
39
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Example of a morphism that is not a function

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#category-theory #morphism
376
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Blow up at point is finite?

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#algebraic-geometry #commutative-algebra #algebraic-curves #blowup #morphism
41
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What do we call a "nearly" order-isomorphism?

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#terminology #order-theory #morphism
282
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There are no non-constant morphisms from $\mathbb{A}^1$ to a cubic curve

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#algebraic-geometry #elliptic-curves #curves #morphism
37
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Equivalent definitions of module homomorphism

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#abstract-algebra #modules #morphism
235
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Monomorphisms and epimorphisms in full subcategories satisfying a certain property

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#category-theory #morphism
145
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A simple question on endomorphisms of a noetherian module.

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#modules #noetherian #morphism
341
Views

$X=Z(xy-1)\subset \mathbb{A}_k^2$ is not isomorphic to $\mathbb{A}^1_k$

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#commutative-algebra #zariski-topology #morphism
215
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Spreading out a morphism of the generic fibers

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#algebraic-geometry #schemes #morphism
515
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Endomorphism of a rings

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#abstract-algebra #ring-theory #noetherian #ring-isomorphism #morphism

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