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  2. List of mathematical abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical...

    def – define or definition. deg – degree of a polynomial, or other recursively-defined objects such as well-formed formulas. (Also written as ∂.) del – del, a differential operator. (Also written as.) det – determinant of a matrix or linear transformation. DFT – discrete Fourier transform.

  3. United States Secretary of Defense - Wikipedia

    en.wikipedia.org/wiki/United_States_Secretary_of...

    Department of Defense Directive 5100.01 describes the organizational relationships within the department and is the foundational issuance for delineating the major functions of the department. The latest version, signed by former secretary of defense Robert Gates in December 2010, is the first major re-write since 1987. [25] [26]

  4. Glossary of mathematical jargon - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    Rigor is a cornerstone quality of mathematics, and can play an important role in preventing mathematics from degenerating into fallacies. well-behaved An object is well-behaved (in contrast with being Pathological ) if it satisfies certain prevailing regularity properties, or if it conforms to mathematical intuition (even though intuition can ...

  5. First cabinet of Donald Trump - Wikipedia

    en.wikipedia.org/wiki/First_cabinet_of_Donald_Trump

    Various other Trump administration appointees are directly involved with economic matters, for example, former director of the National Economic Council Gary Cohn, former National Trade Council director Peter Navarro, SEC chairman Jay Clayton, OMB director Mick Mulvaney, Treasury secretary Steven Mnuchin, Commerce secretary Wilbur Ross, U.S ...

  6. William J. Perry - Wikipedia

    en.wikipedia.org/wiki/William_J._Perry

    William James Perry (born October 11, 1927) is an American mathematician, engineer, businessman, and civil servant who was the United States Secretary of Defense from February 3, 1994, to January 23, 1997, under President Bill Clinton. [2]

  7. Defense Department Advisory Committee on Women in the ...

    en.wikipedia.org/wiki/Defense_Department...

    The Defense Advisory Committee on Women in the Services (DACOWITS) is one of the oldest Department of Defense (DoD) federal advisory committees and was established in 1951 by then-Secretary of Defense (SecDef) George C. Marshall. The committee is composed of civilian women and men appointed by the SecDef to provide advice and recommendations on ...

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  9. Equivalent definitions of mathematical structures - Wikipedia

    en.wikipedia.org/wiki/Equivalent_definitions_of...

    In the former case, equivalence of two definitions means that a mathematical object (for example, geometric body) satisfies one definition if and only if it satisfies the other definition. In the latter case, the meaning of equivalence (between two definitions of a structure) is more complicated, since a structure is more abstract than an object.