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15
Math.TechQA.Club
2026-03-25 19:00:33
110
Views
Betweenness preserving implies monotonic?
Published on
25 Mar 2026 - 19:00
#real-analysis
#examples-counterexamples
#order-theory
#monotone-functions
25
Views
Preserving componentwise order of a vector when permutating the indices
Published on
12 Dec 2018 - 9:44
#permutations
#vectors
#order-theory
#real-numbers
20
Views
Componentwise differences of vectors as bound of componentwise differences after permutating the indices
Published on
12 Dec 2018 - 21:03
#permutations
#vectors
#order-theory
80
Views
When can one atom be below the join of two distinct atoms?
Published on
25 Mar 2026 - 10:55
#order-theory
#lattice-orders
#universal-algebra
234
Views
Books that summarize the classical application of Zorn’s Lemma.
Published on
14 Dec 2018 - 22:02
#reference-request
#set-theory
#order-theory
#axiom-of-choice
244
Views
Partial ordering on a space of matrices
Published on
25 Mar 2026 - 6:10
#matrices
#order-theory
#semiring
46
Views
Given two posets $\preccurlyeq$, prove that the following relation $R$ using both of them is transitive
Published on
16 Dec 2018 - 17:43
#discrete-mathematics
#relations
#order-theory
241
Views
Example of a uniquely complemented lattice?
Published on
25 Mar 2026 - 10:52
#order-theory
#lattice-orders
79
Views
Define non-eventually-constant $f: I \to \{a, b\}$ from arbitrary upwards-directed poset $I$
Published on
25 Mar 2026 - 6:19
#order-theory
#axiom-of-choice
#nets
274
Views
Extension of order-preserving bijection from rationals to reals.
Published on
19 Dec 2018 - 18:02
#real-analysis
#order-theory
55
Views
What is a minimal set of rules that determine the usual order on $\Bbb{N}$ given that $1 \lt p_1 \lt p_2 \lt \dots$?
Published on
25 Mar 2026 - 22:05
#elementary-number-theory
#prime-numbers
#order-theory
#natural-numbers
4.3k
Views
What is the order-type of the set of natural numbers, when written in alphabetical order?
Published on
20 Dec 2018 - 13:24
#elementary-number-theory
#elementary-set-theory
#logic
#order-theory
#puzzle
85
Views
Equivalent properties of a proper ideal of a generalized boolean algebra
Published on
17 Mar 2026 - 23:00
#order-theory
#boolean-algebra
#lattice-orders
#boolean-ring
109
Views
terminology "possible sequences of a set"
Published on
21 Dec 2018 - 21:48
#sequences-and-series
#combinatorics
#order-theory
56
Views
Let $B,C$ be sets, $B\subseteq C$ such that $\forall c∈C,\exists b\in B: c\le b$ then $\sup B=\sup C$.
Published on
26 Mar 2026 - 3:12
#order-theory
#supremum-and-infimum
#ordinals
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