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Precise definition of functions?

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#functions #definition
85
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Confused about saying every "statement" is vacuously true in an inconsistent arithmetic (terminology)

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#logic #terminology #definition #propositional-calculus
38
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Is there a modal operator, L, that satisfies φ ↔ & ~L ⊢ ~Lφ?

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#logic #definition #philosophy
246
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Error in Herstein's "Topics in Algebra", zero ring has characteristic $1$ which is not prime

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#abstract-algebra #ring-theory #definition #integral-domain
190
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What is a gyrational square in this context?

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#euclidean-geometry #definition #polygons #quadrilateral
140
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Good pair vs. well-pointed space

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#general-topology #algebraic-topology #definition #cofibrations
75
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Faces of the cap product

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#general-topology #algebraic-topology #definition #simplex #poincare-duality
2.1k
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How does the common definition of a function satisfy the precise definition of a function?

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#functions #definition
90
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What does it mean to say that three "typical" points in the real plane are non-collinear?

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#geometry #measure-theory #definition
84
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Does not the "inexistence of infinitesimals in the real number system" conflict with the epsilon-delta definition of limit in the set of real numbers?

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#definition #epsilon-delta #infinitesimals
72
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What does this stacked greater than less than symbol do to this equation

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#notation #definition
64
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Quick question about the definition of Simple Modules.

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#abstract-algebra #modules #definition
84
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When a binary relation is connected?

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#elementary-set-theory #proof-explanation #definition #examples-counterexamples #relations
154
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What is the difference between this alternate definition of Cauchy and its actual definition? Will this one work?

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#definition #cauchy-sequences
62
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Proving that angle measurement is well defined

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#euclidean-geometry #definition #triangles

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