Sunday, May 21, 2017

Heads will roll | Define Heads will roll at Dictionary.com

Heads will roll | Define Heads will roll at Dictionary.com: " Expand
heads will roll
sentence

People will be dismissed, punished, ruined, etc : If eventually the authorities catch up with you, no heads will roll/ I promise you: if this package is not delivered on time, heads will roll

[1930+; the source is a quotation from Adolf Hitler]"



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Saturday, May 20, 2017

Differential form - Wikipedia

Differential form - Wikipedia: "The object df can be viewed as a function on U, whose value at p is not a real number, but the linear map dfp."



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Wednesday, May 17, 2017

Pushforward (differential) - Wikipedia

Pushforward (differential) - Wikipedia: "the differential of φ at a point x is, in some sense, the best linear approximation of φ near x."



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Monday, May 15, 2017

Division ring - Wikipedia

Division ring - Wikipedia: " Historically, division rings were sometimes referred to as fields, while fields were called “commutative fields”."



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Saturday, May 13, 2017

Functional analysis - Wikipedia

Functional analysis - Wikipedia: "formed by the study of vector spaces endowed with some kind of limit-related structure (e.g. inner product, norm, topology, etc.) and the linear functions defined on these spaces and respecting these structures in a suitable sense. "



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Function space - Wikipedia

Function space - Wikipedia: "Namely, if Y is a field, functions have inherent vector structure with two operations of pointwise addition and multiplication to a scalar. "



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Isomorphism - Wikipedia

Isomorphism - Wikipedia: "In topology, where the morphisms are continuous functions, isomorphisms are also called homeomorphisms "



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