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New posts in relations
$R$ is transitive if and only if $ R \circ R \subseteq R$
elementary-set-theory
relations
equivalence-relations
function-and-relation-composition
Direct products in the category Rel
category-theory
relations
products
Equivalence closure
computer-science
relations
equivalence-relations
Associativity of cartesian product and nested ordered n-tuples
elementary-set-theory
relations
Reflexive Transitive Closure
discrete-mathematics
relations
Is the following relation on disjoint subsets of [n] transitive?
elementary-set-theory
relations
order-theory
well-orders
The relation "is strictly higher than" is considered antisymmetric?
relations
What is the correct notation for a multivariable function?
functions
notation
relations
Why is the empty set finite?
general-topology
relations
equivalence-relations
How do I define exactly what a function is?
functions
definition
relations
Can a relation with less than 3 elements be considered transitive?
elementary-set-theory
relations
Is this relation symmetric? I think it is but my professor claims it isn't.
relations
Is the empty set partially ordered ? Also, is it totally ordered?
elementary-set-theory
relations
Can a relation be transitive when it is symmetric but not reflexive? [duplicate]
elementary-set-theory
relations
A relation that is both an equivalence relation and a function. [closed]
functions
discrete-mathematics
relations
A problem about symmetric relations on finite sets.
combinatorics
graph-theory
algorithms
recreational-mathematics
relations
How many injective functions from $\{5,6,7,8,9\}$ to itself map $5$ and $6$ to another number?
combinatorics
proof-verification
relations
Converses of transitivity
logic
relations
order-theory
Is an reflexive relation also antisymetric?
discrete-mathematics
relations
representing anti-simmetric relations with directed graphs
discrete-mathematics
relations
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