n. 代数学

[ noun ]
the mathematics of generalized arithmetical operations
<noun.cognition>

Mathematics \Math`e*mat"ics\, n. [F. math['e]matiques, pl., L.
mathematica, sing., Gr. ? (sc. ?) science. See {Mathematic},
and {-ics}.]
That science, or class of sciences, which treats of the exact
relations existing between quantities or magnitudes, and of
the methods by which, in accordance with these relations,
quantities sought are deducible from other quantities known
or supposed; the science of spatial and quantitative
relations.

Note: Mathematics embraces three departments, namely: 1.
{Arithmetic}. 2. {Geometry}, including {Trigonometry}
and {Conic Sections}. 3. {Analysis}, in which letters
are used, including {Algebra}, {Analytical Geometry},
and {Calculus}. Each of these divisions is divided into
pure or abstract, which considers magnitude or quantity
abstractly, without relation to matter; and mixed or
applied, which treats of magnitude as subsisting in
material bodies, and is consequently interwoven with
physical considerations.


Algebra \Al"ge*bra\, n. [LL. algebra, fr. Ar. al-jebr reduction
of parts to a whole, or fractions to whole numbers, fr.
jabara to bind together, consolidate; al-jebr
w'almuq[=a]balah reduction and comparison (by equations): cf.
F. alg[`e]bre, It. & Sp. algebra.]
1. (Math.) That branch of mathematics which treats of the
relations and properties of quantity by means of letters
and other symbols. It is applicable to those relations
that are true of every kind of magnitude.

2. A treatise on this science.