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F. S. Harcourt
F is the sixth letter of the Latin alphabet. F may also refer to: Science and technology Mathematics * F or f, the number 15 in hexadecimal and higher positional systems * ''p''''F''''q'', the hypergeometric function * F-distribution, a continuous probability distribution ** F-test, a statistical test * f, SI prefix femto, factor 10−15 * , Fibonacci number Computing and engineering * F (programming language), a subset of Fortran 95 * F Sharp (programming language), a functional and object-oriented language for the .NET platform. * F* (programming language), a dependently typed functional language for the .NET platform. * F-measure, the harmonic mean of precision and recall * f, in programming languages often used to represent the floating point * F connector, used for inlet in cable modems * F crimp, a type of solderless electrical connection * F band (NATO), a radio frequency band from 3 to 4 GHz * F band (waveguide), a millimetre wave band from 90 to 140 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
15 (number)
15 (fifteen) is the natural number following 14 and preceding 16. Mathematics 15 is: * A composite number, and the sixth semiprime; its proper divisors being , and . * A deficient number, a smooth number, a lucky number, a pernicious number, a bell number (i.e., the number of partitions for a set of size 4), a pentatope number, and a repdigit in binary (1111) and quaternary (33). In hexadecimal, and higher bases, it is represented as F. * A triangular number, a hexagonal number, and a centered tetrahedral number. * The number of partitions of 7. * The smallest number that can be factorized using Shor's quantum algorithm. * The magic constant of the unique order-3 normal magic square. * The number of supersingular primes. Furthermore, * 15 is one of two numbers within the ''teen'' numerical range (13-19) not to use a single-digit number in the prefix of its name (the first syllable preceding the ''teen'' suffix); instead, it uses the adjective form of five (' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
