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15
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Prove the $C(A) = l(u(a))$ is a closure operator on $A$

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#lattice-orders #universal-algebra
132
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Solvability of a system related to the subsets of {1,2,3}

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#combinatorics #inequality #systems-of-equations #lattice-orders #computer-algebra-systems
206
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bounded distributive lattice which is not pseudocomplemented

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#lattice-orders
70
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Solvability of a system related to the subsets of {1,2,3}, II

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#combinatorics #inequality #systems-of-equations #lattice-orders
422
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Properties satisfied by an order relation

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#elementary-set-theory #order-theory #lattice-orders #decision-theory
85
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Counterexample for subgraphs of a graph to be a bi-Heyting algebra, not a Boolean algebra?

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#abstract-algebra #boolean-algebra #lattice-orders
395
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Zorn's Lemma lattice problem

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#set-theory #order-theory #lattice-orders
510
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A={0,1,2,3} and there is a relation R={(0,0), (1,1),(2,0),(2,3),(2,2),(3,2),(3,3)}. Find out whether relation R is POSET or not?

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#discrete-mathematics #lattice-orders
400
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How to encode Hasse diagram with 0's and 1's

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#boolean-algebra #lattice-orders
24
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Lemma on lattices

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#lattice-orders
71
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Characterization of implication in a complete Heyting algebra

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#order-theory #proof-explanation #lattice-orders
228
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Question about ultrafilters in a distributive lattice

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#order-theory #lattice-orders #filters
1.1k
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What does it mean when a Hasse diagram is like a straight line?

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#discrete-mathematics #relations #order-theory #lattice-orders #extremal-combinatorics
39
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The set of $C$-ideals is a frame freely generated by a site $(A, C)$

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#category-theory #lattice-orders #duality-theorems
3.6k
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A Lattice that is not a Complete Lattice

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#lattice-orders

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