the positive integers
101Moore space (topology) — In mathematics, more specifically point set topology, a Moore space is a developable regular Hausdorff space. Equivalently, a topological space X is a Moore space if the following conditions hold: Any two distinct points can be separated by… …
102List of types of functions — Functions can be classified according to the properties they have. These properties describe the functions behaviour under certain conditions.Relative to set theoryThese properties concern the domain, the codomain and the range of functions. *… …
103Basel problem — noun The question as to the value of , the sum of the reciprocals of the squares of the positive integers. As noted, some of Eulers contemporaries, while accepting his answer to the Basel Problem, wondered about the validity of the argument that… …
104commutative — adjective Date: 1612 1. of, relating to, or showing commutation 2. of, relating to, having, or being the property that a given mathematical operation and set have when the result obtained using any two elements of the set with the operation does… …
105sequence — I. noun Etymology: Middle English, from Anglo French, from Medieval Latin sequentia, from Late Latin, sequel, literally, act of following, from Latin sequent , sequens, present participle of sequi Date: 14th century 1. a hymn in irregular meter… …
106Lambek-Moser theorem — In combinatorics, Lambek Moser theorem applies to an increasing arithmetic function with non negative integral value f ( n ), Let :f^* be an integral valued function such that :f(f^*(n)) < n le f(f^*(n)+1).Then :f^{**} = f.Let :F(n) = f(n)+n,… …
107factorial — I. adjective Date: 1837 of, relating to, or being a factor or a factorial II. noun Date: 1869 1. the product of all the positive integers from 1 to n symbol n! 2. the quantity 0! arbitrarily defined as equal to 1 …
108whole number — Math. 1. Also called counting number. one of the positive integers or zero; any of the numbers (0, 1, 2, 3, ...). 2. (loosely) integer (def. 1). [1550 60] * * * …
109Discrete random variable — A random variable that can take only a certain specified set of discrete possible values for example, the positive integers 1, 2, 3, . . . The New York Times Financial Glossary …
110countable — adjective Date: 1581 capable of being counted; especially capable of being put into one to one correspondence with the positive integers < a countable set > • countability noun • countably adverb …
