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Order No. 227 (Russian: Приказ № 227, romanized: Prikaz No. 227) was an order issued on 28 July 1942 by Joseph Stalin, who was acting as the People's Commissar of Defence. It is known for its line "Not a step back!" (Ни шагу назад!, Ni shagu nazad!), which became the primary slogan of the Soviet press in summer 1942.
Etsy, Inc. Etsy, Inc. is an American e-commerce company focused on handmade or vintage items and craft supplies. These items fall under a wide range of categories, including jewelry, bags, clothing, home décor, religious items and furniture, toys, art, as well as craft supplies and tools. Items described as vintage must be at least 20 years ...
Mathematics – Poker: The odds of being dealt a royal flush in poker are 649,739 to 1 against, for a probability of 1.5 × 10 −6 (0.000 15%). Mathematics – Poker: The odds of being dealt a straight flush (other than a royal flush) in poker are 72,192 to 1 against, for a probability of 1.4 × 10 −5 (0.0014%).
Alphabetical order is a system whereby character strings are placed in order based on the position of the characters in the conventional ordering of an alphabet. It is one of the methods of collation. In mathematics, a lexicographical order is the generalization of the alphabetical order to other data types, such as sequences of numbers or ...
v. t. e. An alphabetic numeral system is a type of numeral system. Developed in classical antiquity, it flourished during the early Middle Ages. [1] In alphabetic numeral systems, numbers are written using the characters of an alphabet, syllabary, or another writing system. Unlike acrophonic numeral systems, where a numeral is represented by ...
Order statistic. of the order statistics for a sample of size n = 5 from an with unit scale parameter. In statistics, the k th order statistic of a statistical sample is equal to its k th-smallest value. [1] Together with rank statistics, order statistics are among the most fundamental tools in non-parametric statistics and inference .
In mathematics, the lexicographic or lexicographical order (also known as lexical order, or dictionary order) is a generalization of the alphabetical order of the dictionaries to sequences of ordered symbols or, more generally, of elements of a totally ordered set.
The Weber number ( We) is a dimensionless number in fluid mechanics that is often useful in analysing fluid flows where there is an interface between two different fluids, especially for multiphase flows with strongly curved surfaces. [1] It is named after Moritz Weber (1871–1951). [2] It can be thought of as a measure of the relative ...
The relation on equivalence classes is a partial order. In mathematics, especially in order theory, a preorder or quasiorder is a binary relation that is reflexive and transitive. The name preorder is meant to suggest that preorders are almost partial orders, but not quite, as they are not necessarily antisymmetric .
In mathematics. Six is the smallest positive integer which is neither a square number nor a prime number. It is the second smallest composite number after four, equal to the sum and the product of its three proper divisors ( 1, 2 and 3 ). [1] As such, 6 is the only number that is both the sum and product of three consecutive positive numbers.