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1 vote
1 answer
29 views

Reference for quotient lattices and universal property?

Question: Are there any references explaining the definition (or definitions) of quotient objects in the category of lattices? In particular a characterization in terms of universal properties would ...
hasManyStupidQuestions's user avatar
5 votes
0 answers
70 views

Lattices/Topology and the Stone Duality

For some context I have some partial understanding of lattices and an intermediate understanding of topology. I at some point in the past week started thinking about a funny way to view a topology on ...
Paco's user avatar
  • 61
0 votes
0 answers
20 views

Lift and frame matroids.

I want to read more about lift matroid and frame matroid and their flats and relations to signed graphs, do you know any basic resources for this?
Emptymind's user avatar
  • 2,087
2 votes
0 answers
66 views

Applications of a theorem of M. H. Stone to general topology

Exercise 2.I of J. Kelley's book General Topology introduces a theorem by M.H. Stone concerning maximal ideals in distributive lattices. The statement is the following : Let $A$ and $B$ be disjoint ...
Siminore's user avatar
  • 35.3k
1 vote
1 answer
114 views

Database of lattices and lattice properties

Are there any websites that are databases of lattices? I'm also interested in databases distributed as libraries in a programming language or similar. I'm studying a little bit of lattice theory on ...
Greg Nisbet's user avatar
  • 11.9k
4 votes
1 answer
113 views

Are there $N_n$ lattices generalizing the $N_5$ lattice?

$M_3$ and $N_5$ lattice, respectively, is a widely used notation for these two lattices. I'm wondering what the indices mean. For the M case, I found in the book of B. A. Davey, H. A. Priestley, ...
Ulli's user avatar
  • 4,307
1 vote
0 answers
26 views

Generalizing section-based operations on abstract polytopes

While writing some code to explore abstract polytopes, I've noticed that many intuitive polytope operations (like the Conway polyhedron operations) can be obtained by defining the output polytope $Q$ ...
Karl's user avatar
  • 11.8k
6 votes
1 answer
293 views

The lattices $M_3$ and $N_5$

Why are $M_3$ and $N_5$ lattices in the theory of lattices called so? They are well known for that their existence as a sublattice signifies lack of modularity/distributivity, yet their names are a ...
Jakobian's user avatar
  • 10.5k
0 votes
1 answer
151 views

A cartesian product of distributive lattices is distibutive

I have seen a few articles cite this result as coming from the 3rd edition of G Birkhoff's "Lattice theory" but I can't find the result in there myself. The index does not seem to mention &...
nasosev's user avatar
  • 469
4 votes
3 answers
193 views

Determining if lattice elements are equal

I am working in a distributive lattice with top and bottom elements. I would like to know if there is an algorithm to determine if $s=t$ for any two elements $s,t$ in the lattice. For example, if $t=s\...
Eoin's user avatar
  • 369
0 votes
1 answer
159 views

On the existence of a totally ordered set in a partially ordered set.

I can't find references regarding the following problem, could someone give me some suggestions or information? From any partially ordered set we can extract a totally ordered set. Definition$(\text{...
NatMath's user avatar
  • 162
2 votes
0 answers
25 views

Reference request: finding maximal ordered subgroups of lattice-ordered groups?

I am trying to find references that provide techniques for constructing (totally-) ordered subgroups of lattice-ordered groups $G$. For those who are not familiar, a lattice-ordered group $G$ is set ...
Franklin Pezzuti Dyer's user avatar
1 vote
0 answers
36 views

A general setting to state the isomorphism theorems for (complete) (semi)lattices

Lattices, complete lattices and (complete) lower and upper semilattices are all very similar algebraic structures. The homomorphisms between lattices of the same type and also the Isomorphism Theorems ...
Castor's user avatar
  • 355
0 votes
1 answer
44 views

Is the set of noncrossing partitions of an infinite set a lattice?

It is well-known that the set of noncrossing partitions of a finite set is a lattice; see e.g. Wikipedia or the 1991 article by Simion and Ullman. What about the infinite case? Is the set of ...
Bart's user avatar
  • 1,148
2 votes
1 answer
76 views

Does this lattice construction have a name?

Suppose we are given complete lattices $(L_i,\le_i)$ indexed over some set $I$, such that $L_i\ne 2$ and $L_i\cap L_j=\emptyset$ for all $i\ne j$. There is a sort of "amalgamation" that can ...
Castor's user avatar
  • 355

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