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  2. Quinary - Wikipedia

    en.wikipedia.org/wiki/Quinary

    Quinary (base 5 or pental [1] [2] [3]) is a numeral system with five as the base. A possible origination of a quinary system is that there are five digits on either hand . In the quinary place system, five numerals, from 0 to 4 , are used to represent any real number .

  3. Bjarne Stroustrup - Wikipedia

    en.wikipedia.org/wiki/Bjarne_Stroustrup

    Bjarne Stroustrup (/ ˈ b j ɑːr n ə ˈ s t r ɒ v s t r ʊ p /; Danish: [ˈbjɑːnə ˈstʁʌwˀstʁɔp]; [3] [4] born 30 December 1950) is a Danish computer scientist, known for the development of the C++ programming language. [5]

  4. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    The Natural Area Code, this is the smallest base such that all of ⁠ 1 / 2 ⁠ to ⁠ 1 / 6 ⁠ terminate, a number n is a regular number if and only if ⁠ 1 / n ⁠ terminates in base 30. 32: Duotrigesimal: Found in the Ngiti language. 33: Use of letters (except I, O, Q) with digits in vehicle registration plates of Hong Kong. 34

  5. Bi-quinary coded decimal - Wikipedia

    en.wikipedia.org/wiki/Bi-quinary_coded_decimal

    The Remington Rand 409 has five bits: one quinary bit (tube) for each of 1, 3, 5, and 7 - only one of these would be on at the time. The fifth bi bit represented 9 if none of the others were on; otherwise it added 1 to the value represented by the other quinary bit. The machine was sold in the two models UNIVAC 60 and UNIVAC 120.

  6. Class diagram - Wikipedia

    en.wikipedia.org/wiki/Class_diagram

    In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.

  7. List of number fields with class number one - Wikipedia

    en.wikipedia.org/wiki/List_of_number_fields_with...

    The class number of a number field is by definition the order of the ideal class group of its ring of integers. Thus, a number field has class number 1 if and only if its ring of integers is a principal ideal domain (and thus a unique factorization domain). The fundamental theorem of arithmetic says that Q has class number 1.

  8. Quinarian system - Wikipedia

    en.wikipedia.org/wiki/Quinarian_system

    Swainson's Quinarian structure of birds. Quinarianism gets its name from the emphasis on the number five: it proposed that all taxa are divisible into five subgroups, and if fewer than five subgroups were known, quinarians believed that a missing subgroup remained to be found.

  9. Quaternary numeral system - Wikipedia

    en.wikipedia.org/wiki/Quaternary_numeral_system

    As with the octal and hexadecimal numeral systems, quaternary has a special relation to the binary numeral system.Each radix four, eight, and sixteen is a power of two, so the conversion to and from binary is implemented by matching each digit with two, three, or four binary digits, or bits.