Question

The supremum function for ideals is continuous

score 46 · Answer 1 · 2026-04-09 17:07:00

46

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The supremum function for ideals is continuous

Published on 09 Apr 2026 - 17:07

score 199 · Answer 2 · 2026-04-11 14:11:20

199

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Understanding total orders, strict total orders, and partial orders

Published on 11 Apr 2026 - 14:11

score 235 · Answer 3 · 2026-04-12 21:54:42

235

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How prove the greatest post-fixed point of monotonic function is a fixed point of function?

Published on 12 Apr 2026 - 21:54

score 46 · Answer 4 · 2026-04-13 00:59:01

46

Views

Determinant obtained from a function on a semi-lattice

Published on 13 Apr 2026 - 0:59

score 118 · Answer 5 · 2026-04-16 07:56:55

118

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Right unitor in the monoidal category of sup-lattices

Published on 16 Apr 2026 - 7:56

score 94 · Answer 6 · 2026-04-08 22:28:02

94

Views

Is $\downarrow$ continuous?

Published on 08 Apr 2026 - 22:28

score 141 · Answer 7 · 2026-04-12 14:34:02

141

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Cardinality of Dedekind Completion of Hyperreals

Published on 12 Apr 2026 - 14:34

score 80 · Answer 8 · 2026-04-12 22:02:28

80

Views

Do the primes form the least (infinite) primitive set?

Published on 12 Apr 2026 - 22:02

score 27 · Answer 9 · 2026-04-14 14:38:46

27

Views

Is a Preorder with a Direction Necessarily a Poset?

Published on 14 Apr 2026 - 14:38

score 168 · Answer 10 · 2026-04-17 02:04:54

168

Views

Let $(F,+,\cdot,0_F,1_F,\le)$ be an ordered field. If the set $\{x\in F: 0_F\le x\le 1_F\}$ is complete, is the whole field complete?

Published on 17 Apr 2026 - 2:04

score 63 · Answer 11 · 2026-04-15 06:12:32

63

Views

Open sets in $S_\Omega$ (minimal uncountable well ordered set) with the order topology.

Published on 15 Apr 2026 - 6:12

score 98 · Answer 12 · 2026-04-15 12:18:39

98

Views

Infinite Lexicographic Order on Bijections is Well-Order

Published on 15 Apr 2026 - 12:18

score 59 · Answer 13 · 2026-04-11 19:30:50

59

Views

"Separation of disjoint closed set by open neighborhood" implies perfect normality?

Published on 11 Apr 2026 - 19:30

score 111 · Answer 14 · 2026-03-25 17:45:38

111

Views

Surreal numbers ordering and false inequality $1\le0$

Published on 25 Mar 2026 - 17:45

score 80 · Answer 15 · 2026-04-12 08:49:21

80

Views

Is the above definition in this book ok? ("Lecture Notes on Elementary Topology and Geometry" by I. M. Singer and J. A. Thorpe)

Published on 12 Apr 2026 - 8:49

List Question

The supremum function for ideals is continuous

Understanding total orders, strict total orders, and partial orders

How prove the greatest post-fixed point of monotonic function is a fixed point of function?

Determinant obtained from a function on a semi-lattice

Right unitor in the monoidal category of sup-lattices

Is $\downarrow$ continuous?

Cardinality of Dedekind Completion of Hyperreals

Do the primes form the least (infinite) primitive set?

Is a Preorder with a Direction Necessarily a Poset?

Let $(F,+,\cdot,0_F,1_F,\le)$ be an ordered field. If the set $\{x\in F: 0_F\le x\le 1_F\}$ is complete, is the whole field complete?

Open sets in $S_\Omega$ (minimal uncountable well ordered set) with the order topology.

Infinite Lexicographic Order on Bijections is Well-Order

"Separation of disjoint closed set by open neighborhood" implies perfect normality?

Surreal numbers ordering and false inequality $1\le0$

Is the above definition in this book ok? ("Lecture Notes on Elementary Topology and Geometry" by I. M. Singer and J. A. Thorpe)

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