# What is substitution?

• (noun): .
Example: "The act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"
Synonyms: exchange, commutation

### Some articles on substitution:

Substitution Tiling - Mathematical Definition
... A tile substitution is often loosely defined in the literature ... A tile substitution with respect to the prototiles P is a pair, where is a linear map, all of whose eigenvalues are larger than one in modulus, together with a substitution rule that ... The tile substitution induces a map from any tiling T of a region W to a tiling of, defined by Note, that the prototiles can be deduced from the ...
Substitution Principle
... Substitution principle can refer to several things Substitution principle (mathematics) Substitution principle (sustainability) Liskov substitution principle (computer science) ...
Lithium Iron Phosphate - Metal Substitution
... A123 and Valence reported the substitution of magnesium, titanium, manganese, zirconium and zinc ... Take zinc substitution for example ... Cyclic voltammetry also confirms that LiFe1-xMxPO4, after metal substitution, has higher reversibility of lithium ion insertion and extraction ...
Landen's Transformation - Proof
... may be achieved purely by integration by substitution ... cast the integral in an algebraic form by a substitution of, giving A further substitution of gives the desired result (in the algebraic form) This latter step is facilitated by writing ...
Substitution - Other Uses
... Substitution (algebra), replacing occurrences of some symbol by a given value Substitution (law), the replacement of a judge Substitution (poetry), a variation in poetic scansion "Substitut ...

### Famous quotes containing the word substitution:

To play is nothing but the imitative substitution of a pleasurable, superfluous and voluntary action for a serious, necessary, imperative and difficult one. At the cradle of play as well as of artistic activity there stood leisure, tedium entailed by increased spiritual mobility, a horror vacui, the need of letting forms no longer imprisoned move freely, of filling empty time with sequences of notes, empty space with sequences of form.
Max J. Friedländer (1867–1958)

Virtue is the adherence in action to the nature of things, and the nature of things makes it prevalent. It consists in a perpetual substitution of being for seeming, and with sublime propriety God is described as saying, I A—.
Ralph Waldo Emerson (1803–1882)