Countable Corporation (aka Countable) is a Software-as-a-Service (SaaS) company based in San Francisco. The company was founded in 2013 by its CEO Bart...

is countable if either it is finite or it can be made in one to one correspondence with the set of natural numbers. Equivalently, a set is countable if...

topology, a second-countable space, also called a completely separable space, is a topological space whose topology has a countable base. More explicitly...

support from other users. In 2019, Causes was acquired by Countable Corporation. In 2020, Countable.us and its associated app merged with Causes.com. Causes...

requirements: First, the probability of a countable union of mutually exclusive events must be equal to the countable sum of the probabilities of each of these...

I}X_{i}} is not empty. The union of any countable family of countable sets is countable (this requires countable choice but not the full axiom of choice)...

ω1 is a countable set; for any sequence of such sets, the union of these sets is the union of countably many countable sets, so still countable; this union...

informally, is an infinite set that contains too many elements to be countable. The uncountability of a set is closely related to its cardinal number:...

{\displaystyle M} can be chosen to be a "bare bones" model that is externally countable, which guarantees that there will be many subsets (in V {\displaystyle...

{\displaystyle P(X\in \bigcup _{i}E_{i})=\sum _{i}P(X\in E_{i})} for any countable disjoint family of sets { E i } {\displaystyle \{E_{i}\}} The concept...

can only have jump discontinuities; f {\displaystyle f} can only have countably many discontinuities in its domain. The discontinuities, however, do not...

topology, σ-compact topological space is one that can be written as a countable union of compact subsets. In mathematical analysis and in probability...

of N {\displaystyle \mathbb {N} } are called countable sets; these are either finite sets or countably infinite sets (sets of the same cardinality as...

set first-countable space: every point has a countable neighbourhood basis (local base) second-countable space: the topology has a countable base separable...

collection of things. One is most commonly a determiner used with singular countable nouns, as in one day at a time. The determiner has two senses: numerical...

Kronecker objected to Cantor's proofs that the algebraic numbers are countable, and that the transcendental numbers are uncountable, results now included...

Brigade was acqui-hired by Pinterest and its technology was purchased by Countable. In early 2020, Mahan entered the San Jose City Council District 10 race...

known about infinitely generated abelian groups, even in the torsion-free countable case. An abelian group ⟨ G , + , 0 ⟩ {\displaystyle \langle G,+,0\rangle...

commonly used as a mass noun ("some Lego") or, in American English, as a countable noun with plural "Legos", to refer to the bricks themselves, but as is...

of as, "What happens next depends only on the state of affairs now." A countably infinite sequence, in which the chain moves state at discrete time steps...

Cantor's proof that the real numbers are uncountable and the rationals countable, it follows that almost all real numbers are irrational. The first proof...

subsets of X {\displaystyle X} whose complements in X {\displaystyle X} are countable. Cofinite topology Double-pointed cofinite topology Ordinal number topology...

well-ordered countably infinite set without limit points. This assignment can be generalized to general well-orderings with a cardinality beyond countability, to...

equinumerous to the original set), and that the Cartesian product of even a countably infinite number of copies of the real numbers is equinumerous to a single...

applications Discrete mathematics, broadly speaking, is the study of individual, countable mathematical objects. An example is the set of all integers. Because the...

by Pinterest. The remaining company assets and IP, including the Causes assets, were purchased by GovTech app Countable. James Windon was the president...

Moscow, Russia, with IATA Airport Code SVO Small Veblen ordinal, a large countable ordinal Social value orientations, a psychological construct Sparse voxel...

responded to these paradoxes by developing the notion of a potential countable infinity, as well as the infinitely divisible continuum. The Indian philosopher...

grammatical gender. Countable nouns inflect for number (singular and plural). However, the division between uncountable and countable nouns is more ambiguous...

with finite (possibly empty) sequences of positive numbers, which are countable and can be placed in order first by sum of entries, and then by lexicographic...