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2. Denotes that a number is positive and is read as plus. Redundant, but sometimes used for emphasizing that a number is positive, specially when other numbers in the context are or may be negative; for example, +2. 3. Sometimes used instead of for a disjoint union of sets. − 1.
Algebra is the branch of mathematics that studies certain abstract systems, known as algebraic structures, and the manipulation of expressions within those systems. It is a generalization of arithmetic that introduces variables and algebraic operations other than the standard arithmetic operations, such as addition and multiplication.
The number of binary strings of length n without an odd number of consecutive 1 s is the Fibonacci number F n+1. For example, out of the 16 binary strings of length 4, there are F 5 = 5 without an odd number of consecutive 1 s—they are 0000, 0011, 0110, 1100, 1111.
CNN — The FBI has discovered about 2,400 new records related to the assassination of President John F. Kennedy from a new records search following an executive order from President Donald Trump.
Many of us haven’t had to ponder the nuance of tariffs since 9th-grade history class. That is until this election season when President Trump proposed a 10 to 20 percent tariff on all goods ...
Bill Gates details his early relationship with Steve Ballmer in his new "Source Code" memoir. Ballmer mirrored Gates' energy, boosted his social life, and became the business partner he needed.
the aliquot sum of 91 is 21; itself a semiprime, within an aliquot sequence of two composite numbers (91, 21, 11, 1, 0) to the prime in the 11-aliquot tree. 91 is the fourth composite number in the 11-aliquot tree. (91, 51, 21, 18). the 13th triangular number. [2] a hexagonal number, [3] one of the few such numbers to also be a centered ...
A computable number, also known as recursive number, is a real number such that there exists an algorithm which, given a positive number n as input, produces the first n digits of the computable number's decimal representation.