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Hessenberg power of ordinals

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#set-theory #order-theory #ordinals #well-orders
50
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Number of partial orders that contain a specific relation?

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#discrete-mathematics #relations #order-theory
151
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Cuts and continuous sets

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#set-theory #order-theory #real-numbers #rational-numbers
351
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Prove that if $(A,<)$ lattice and A is finite then A has maximun and minimun

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#discrete-mathematics #relations #order-theory
103
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Cardinal of the total dense orders on the reals

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#logic #order-theory #cardinals
215
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Free ultrafilter generated by a collection

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#set-theory #order-theory #filters
1.9k
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How to prove a set is well-ordered

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#order-theory #ordinals #well-orders
399
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Least Upper Bound Existence Problem for Real and Rational Numbers

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#real-analysis #calculus #elementary-set-theory #order-theory
58
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The meaning of theorem 9 (Set Theory and Metric Spaces - Kaplansky)

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#elementary-set-theory #proof-explanation #order-theory
40
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True or false: a chain of at most countable sets has an at most countable union.

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#elementary-set-theory #order-theory
95
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Does any complete linear order of size $2^{\aleph_0}$ embed into $(\mathbb{R},<)$?

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#order-theory #model-theory
63
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Transitivity of a composition of partial orders

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#discrete-mathematics #examples-counterexamples #order-theory
439
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Card combinations

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#combinatorics #order-theory #card-games
68
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All elements of $(\mathbb{Q}, <)$ have the same type, without parameters

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#first-order-logic #order-theory #model-theory
32
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Ordered sets. Let $(A, \le_A)$ and $(B, \le_B)$ be ordered sets.

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#order-theory

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