Newbetuts
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New posts in order-theory
The preorder of countable order types
set-theory
cardinals
order-theory
ordinals
Construction of uncountably many non-isomorphic linear (total) orderings of natural numbers
elementary-set-theory
order-theory
natural-numbers
On Tarski-Knaster theorem
elementary-set-theory
order-theory
fixed-point-theorems
Order Preserving Isomorphism
group-theory
order-theory
ordered-groups
Discrete Math - Hasse Diagrams
discrete-mathematics
order-theory
Symmetric relations form a CABA
elementary-set-theory
set-theory
order-theory
boolean-algebra
lattice-orders
Question on a step of "A Simple Proof of Zorn's Lemma" by Lewin
set-theory
order-theory
axiom-of-choice
well-orders
Representation theorem for Complete Atomic Heyting Algebras
logic
category-theory
order-theory
heyting-algebra
Any Well-Ordering of $\mathbb{R}$ has no Corresponding Metric
real-analysis
set-theory
order-theory
well-orders
limsup and liminf of a sequence of subsets of a set
general-topology
elementary-set-theory
order-theory
lattice-orders
limsup-and-liminf
Problem with "tree" definitions
terminology
order-theory
Need a clarification of the proof that the prime ideal space of a distributive bounded lattice is compact
combinatorics
discrete-mathematics
order-theory
lattice-orders
Sole minimal element: Why not also the minimum?
elementary-set-theory
relations
order-theory
A general "inclusion-exclusion principle" / Formulas like $\inf(a,b)\sup(a,b)=ab$
reference-request
order-theory
inclusion-exclusion
Is $(\pmb{1} + \pmb{\eta})\cdot\pmb{\omega_1} = \pmb{1} + \pmb{\eta}\cdot\pmb{\omega_1}$?
set-theory
order-theory
ordinals
bijective homomorphisms between non isomorphic posets, example , explanation needed
category-theory
order-theory
Isomorphisms: preserve structure, operation, or order?
abstract-algebra
group-theory
field-theory
order-theory
Can I always order a countable set of numbers?
real-analysis
elementary-set-theory
order-theory
Examples of Galois connections?
galois-theory
order-theory
Defining arbitrary join on the set of complete ideals of a Heyting Algebra
order-theory
lattice-orders
constructive-mathematics
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