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Can we treat a Hasse diagram as a simple undirected graph?

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#discrete-mathematics #graph-theory #relations #order-theory
150
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How do you call a partition of a totally ordered set that....

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#combinatorics #order-theory #set-partition
149
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How to complete semi-lattice via Adjunctions?

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#category-theory #order-theory #lattice-orders #adjoint-functors #kan-extensions
210
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discrete groupoid

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#category-theory #order-theory
287
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Does a bounded well-ordered set have a maximum?

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#elementary-set-theory #order-theory #well-orders
82
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Does "normal" induction work in any well-ordered set?

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#elementary-set-theory #induction #order-theory #well-orders
87
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Möbius function of subpermutation ordering of $[n]$, is equal to number of derangements of $[n]$.

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#combinatorics #order-theory #mobius-function
58
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Max size of set that doesn't contain k+1 length chain

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#combinatorics #order-theory #extremal-combinatorics
52
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Definition of quotient algebra in Bell & Slomson's Models and Ultraproducts

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#order-theory #boolean-algebra
466
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Subsets $Y$ of a partially ordered set $L$ need not have least upper bounds nor greatest lower bounds

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#real-analysis #order-theory #upper-lower-bounds
115
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Partial order and finding min/max

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#discrete-mathematics #order-theory
150
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What's wrong with just adding a top and bottom element to a poset to convert it into a lattice?

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#order-theory
491
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Generalising the recursion theorem to well-founded posets

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#set-theory #order-theory #transfinite-recursion
706
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Is the union of partially ordered sets also partially ordered?

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#elementary-set-theory #relations #order-theory #monotone-functions
64
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Show that $F$ is a monotone function

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#elementary-set-theory #computer-science #relations #order-theory #monotone-functions

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