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15
416
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Galois theory, had it solved any major problems beside its original applications to classical problems?

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#abstract-algebra #galois-theory #galois-representations #galois-cohomology #galois-connections
227
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Trivial covering of a topological space

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#algebraic-topology #covering-spaces #galois-connections
49
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Action of $\operatorname{Gal}(K(X))$ on the normalization of $X$ in $K(X)^\text{sep}$

Published on
#algebraic-geometry #arithmetic-geometry #ramification #galois-connections
88
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Understanding infimum in a complete lattice

Published on
#supremum-and-infimum #lattice-orders #galois-connections
119
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Does $\mathcal C=\mathrm{Pol}(\mathrm{Inv}(\mathcal C))$ hold for clones on an infinite set?

Published on
#lattice-orders #universal-algebra #galois-connections
71
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An exercise on Galois Connections

Published on
#universal-algebra #galois-connections
109
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How to prove that image and inverse image form a Galois connection

Published on
#galois-connections
300
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Galois Theory of Ramified Coverings & Classical Galois Theory

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#galois-theory #homotopy-theory #covering-spaces #galois-connections
155
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Constraint satisfaction problem with a semilattice polymorphism is polynomial-soluble

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#computer-science #computational-complexity #universal-algebra #galois-connections
58
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If a Galois connection does exists, how is it called?

Published on
#terminology #order-theory #lattice-orders #galois-connections
75
Views

Two nonisomorphic tensor products - where is the error?

Published on
#category-theory #tensor-products #fake-proofs #galois-connections
243
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$f\in K[t]$ is irreducible if and only if $G$ $(\Gamma(L:K))$ acts transitively on the roots of $f$.

Published on
#galois-theory #galois-representations #galois-connections
273
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Galois connection and order-isomorphisms

Published on
#order-theory #lattice-orders #galois-connections
71
Views

Longer chains of adjoints :-)

Published on
#order-theory #adjoint-functors #galois-connections
65
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Is this always a Galois connection?

Published on
#order-theory #galois-connections

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