| slovo | definícia |
infinity
(encz) | infinity,nekonečno n: [mat.] |
infinity
(encz) | infinity,nekonečnost n: Zdeněk Brož |
infinity
(encz) | infinity,nesmírnost n: Zdeněk Brož |
Infinity
(gcide) | Infinity \In*fin"i*ty\, n.; pl. Infinities. [L. infinitas;
pref. in- not + finis boundary, limit, end: cf. F.
infinit['e]. See Finite.]
[1913 Webster]
1. Unlimited extent of time, space, or quantity; eternity;
boundlessness; immensity. --Sir T. More.
[1913 Webster]
There can not be more infinities than one; for one
of them would limit the other. --Sir W.
Raleigh.
[1913 Webster]
2. Unlimited capacity, energy, excellence, or knowledge; as,
the infinity of God and his perfections. --Hooker.
[1913 Webster]
3. Endless or indefinite number; great multitude; as an
infinity of beauties. --Broome.
[1913 Webster]
4. (Math.) A quantity greater than any assignable quantity of
the same kind.
[1913 Webster]
Note: Mathematically considered, infinity is always a limit
of a variable quantity, resulting from a particular
supposition made upon the varying element which enters
it. --Davies & Peck (Math. Dict.).
[1913 Webster]
5. (Geom.) That part of a line, or of a plane, or of space,
which is infinitely distant. In modern geometry, parallel
lines or planes are sometimes treated as lines or planes
meeting at infinity.
[1913 Webster]
Circle at infinity, an imaginary circle at infinity,
through which, in geometry of three dimensions, every
sphere is imagined to pass.
Circular points at infinity. See under Circular.
[1913 Webster] |
infinity
(wn) | infinity
n 1: time without end [syn: eternity, infinity] |
infinity
(foldoc) | infinity
1. The size of something infinite.
Using the word in the context of sets is sloppy, since
different infinite sets aren't necessarily the same size
cardinality as each other.
See also aleph 0
2. The largest value that can be represented in
a particular type of variable (register, memory location,
data type, whatever).
See also minus infinity.
[Jargon File]
(1994-11-18)
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infinity
(jargon) | infinity
n.
1. The largest value that can be represented in a particular type of
variable (register, memory location, data type, whatever).
2. minus infinity: The smallest such value, not necessarily or even usually
the simple negation of plus infinity. In N-bit twos-complement arithmetic,
infinity is 2^N-1 - 1 but minus infinity is - (2^N-1), not -(2^N-1 - 1).
Note also that this is different from time T equals minus infinity, which
is closer to a mathematician's usage of infinity.
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| | podobné slovo | definícia |
Circle at infinity
(gcide) | Infinity \In*fin"i*ty\, n.; pl. Infinities. [L. infinitas;
pref. in- not + finis boundary, limit, end: cf. F.
infinit['e]. See Finite.]
[1913 Webster]
1. Unlimited extent of time, space, or quantity; eternity;
boundlessness; immensity. --Sir T. More.
[1913 Webster]
There can not be more infinities than one; for one
of them would limit the other. --Sir W.
Raleigh.
[1913 Webster]
2. Unlimited capacity, energy, excellence, or knowledge; as,
the infinity of God and his perfections. --Hooker.
[1913 Webster]
3. Endless or indefinite number; great multitude; as an
infinity of beauties. --Broome.
[1913 Webster]
4. (Math.) A quantity greater than any assignable quantity of
the same kind.
[1913 Webster]
Note: Mathematically considered, infinity is always a limit
of a variable quantity, resulting from a particular
supposition made upon the varying element which enters
it. --Davies & Peck (Math. Dict.).
[1913 Webster]
5. (Geom.) That part of a line, or of a plane, or of space,
which is infinitely distant. In modern geometry, parallel
lines or planes are sometimes treated as lines or planes
meeting at infinity.
[1913 Webster]
Circle at infinity, an imaginary circle at infinity,
through which, in geometry of three dimensions, every
sphere is imagined to pass.
Circular points at infinity. See under Circular.
[1913 Webster] |
Circular points at infinity
(gcide) | Infinity \In*fin"i*ty\, n.; pl. Infinities. [L. infinitas;
pref. in- not + finis boundary, limit, end: cf. F.
infinit['e]. See Finite.]
[1913 Webster]
1. Unlimited extent of time, space, or quantity; eternity;
boundlessness; immensity. --Sir T. More.
[1913 Webster]
There can not be more infinities than one; for one
of them would limit the other. --Sir W.
Raleigh.
[1913 Webster]
2. Unlimited capacity, energy, excellence, or knowledge; as,
the infinity of God and his perfections. --Hooker.
[1913 Webster]
3. Endless or indefinite number; great multitude; as an
infinity of beauties. --Broome.
[1913 Webster]
4. (Math.) A quantity greater than any assignable quantity of
the same kind.
[1913 Webster]
Note: Mathematically considered, infinity is always a limit
of a variable quantity, resulting from a particular
supposition made upon the varying element which enters
it. --Davies & Peck (Math. Dict.).
[1913 Webster]
5. (Geom.) That part of a line, or of a plane, or of space,
which is infinitely distant. In modern geometry, parallel
lines or planes are sometimes treated as lines or planes
meeting at infinity.
[1913 Webster]
Circle at infinity, an imaginary circle at infinity,
through which, in geometry of three dimensions, every
sphere is imagined to pass.
Circular points at infinity. See under Circular.
[1913 Webster]Circular \Cir"cu*lar\, a. [L. circularis, fr. circulus circle:
cf. F. circulaire. See Circle.]
[1913 Webster]
1. In the form of, or bounded by, a circle; round.
[1913 Webster]
2. repeating itself; ending in itself; reverting to the point
of beginning; hence, illogical; inconclusive; as, circular
reasoning.
[1913 Webster]
3. Adhering to a fixed circle of legends; cyclic; hence,
mean; inferior. See Cyclic poets, under Cyclic.
[1913 Webster]
Had Virgil been a circular poet, and closely adhered
to history, how could the Romans have had Dido?
--Dennis.
[1913 Webster]
4. Addressed to a circle, or to a number of persons having a
common interest; circulated, or intended for circulation;
as, a circular letter.
[1913 Webster]
A proclamation of Henry III., . . . doubtless
circular throughout England. --Hallam.
[1913 Webster]
5. Perfect; complete. [Obs.]
[1913 Webster]
A man so absolute and circular
In all those wished-for rarities that may take
A virgin captive. --Massinger.
[1913 Webster]
Circular are, any portion of the circumference of a circle.
Circular cubics (Math.), curves of the third order which
are imagined to pass through the two circular points at
infinity.
Circular functions. (Math.) See under Function.
Circular instruments, mathematical instruments employed for
measuring angles, in which the graduation extends round
the whole circumference of a circle, or 360[deg].
Circular lines, straight lines pertaining to the circle, as
sines, tangents, secants, etc.
Circular note or Circular letter.
(a) (Com.) See under Credit.
(b) (Diplomacy) A letter addressed in identical terms to a
number of persons.
Circular numbers (Arith.), those whose powers terminate in
the same digits as the roots themselves; as 5 and 6, whose
squares are 25 and 36. --Bailey. --Barlow.
Circular points at infinity (Geom.), two imaginary points
at infinite distance through which every circle in the
plane is, in the theory of curves, imagined to pass.
Circular polarization. (Min.) See under Polarization.
Circular sailing or Globular sailing (Naut.), the method
of sailing by the arc of a great circle.
Circular saw. See under Saw.
[1913 Webster] |
Infinity
(gcide) | Infinity \In*fin"i*ty\, n.; pl. Infinities. [L. infinitas;
pref. in- not + finis boundary, limit, end: cf. F.
infinit['e]. See Finite.]
[1913 Webster]
1. Unlimited extent of time, space, or quantity; eternity;
boundlessness; immensity. --Sir T. More.
[1913 Webster]
There can not be more infinities than one; for one
of them would limit the other. --Sir W.
Raleigh.
[1913 Webster]
2. Unlimited capacity, energy, excellence, or knowledge; as,
the infinity of God and his perfections. --Hooker.
[1913 Webster]
3. Endless or indefinite number; great multitude; as an
infinity of beauties. --Broome.
[1913 Webster]
4. (Math.) A quantity greater than any assignable quantity of
the same kind.
[1913 Webster]
Note: Mathematically considered, infinity is always a limit
of a variable quantity, resulting from a particular
supposition made upon the varying element which enters
it. --Davies & Peck (Math. Dict.).
[1913 Webster]
5. (Geom.) That part of a line, or of a plane, or of space,
which is infinitely distant. In modern geometry, parallel
lines or planes are sometimes treated as lines or planes
meeting at infinity.
[1913 Webster]
Circle at infinity, an imaginary circle at infinity,
through which, in geometry of three dimensions, every
sphere is imagined to pass.
Circular points at infinity. See under Circular.
[1913 Webster] |
Plane at infinity
(gcide) | Plane \Plane\, n. [F. plane, L. plana. See Plane, v. & a.]
1. (Geom.) A surface, real or imaginary, in which, if any two
points are taken, the straight line which joins them lies
wholly in that surface; or a surface, any section of which
by a like surface is a straight line; a surface without
curvature.
[1913 Webster]
2. (Astron.) An ideal surface, conceived as coinciding with,
or containing, some designated astronomical line, circle,
or other curve; as, the plane of an orbit; the plane of
the ecliptic, or of the equator.
[1913 Webster]
3. (Mech.) A block or plate having a perfectly flat surface,
used as a standard of flatness; a surface plate.
[1913 Webster]
4. (Joinery) A tool for smoothing boards or other surfaces of
wood, for forming moldings, etc. It consists of a
smooth-soled stock, usually of wood, from the under side
or face of which projects slightly the steel cutting edge
of a chisel, called the iron, which inclines backward,
with an apperture in front for the escape of shavings; as,
the jack plane; the smoothing plane; the molding plane,
etc.
[1913 Webster]
Objective plane (Surv.), the horizontal plane upon which
the object which is to be delineated, or whose place is to
be determined, is supposed to stand.
Perspective plane. See Perspective.
Plane at infinity (Geom.), a plane in which points
infinitely distant are conceived as situated.
Plane iron, the cutting chisel of a joiner's plane.
Plane of polarization. (Opt.) See Polarization.
Plane of projection.
(a) The plane on which the projection is made,
corresponding to the perspective plane in perspective;
-- called also principal plane.
(b) (Descriptive Geom.) One of the planes to which points
are referred for the purpose of determining their
relative position in space.
Plane of refraction or Plane of reflection (Opt.), the
plane in which lie both the incident ray and the refracted
or reflected ray.
[1913 Webster] |
minus infinity
(foldoc) | minus infinity
The most negative value, not necessarily or even usually the
simple negation of plus infinity. In N bit twos-complement
arithmetic, infinity is 2^(N-1) - 1 but minus infinity is
-(2^(N-1)), not -(2^(N-1) - 1).
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since time t equals minus infinity
(foldoc) | since time T equals minus infinity
A long time ago; for as long as anyone can remember; at the
time that some particular frob was first designed. Usually
the word "time" is omitted. See also time T; contrast
epoch.
[Jargon File]
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since time t equals minus infinity
(jargon) | since time T equals minus infinity
adv.
A long time ago; for as long as anyone can remember; at the time that some
particular frob was first designed. Usually the word ‘time’ is omitted. See
also time T; contrast epoch.
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zero-one-infinity rule
(jargon) | Zero-One-Infinity Rule
prov.
“Allow none of foo, one of foo, or any number of foo.” A rule of
thumb for software design, which instructs one to not place random limits
on the number of instances of a given entity (such as: windows in a window
system, letters in an OS's filenames, etc.). Specifically, one should
either disallow the entity entirely, allow exactly one instance (an “
exception”), or allow as many as the user wants — address space and memory
permitting.
The logic behind this rule is that there are often situations where it
makes clear sense to allow one of something instead of none. However, if
one decides to go further and allow N (for N > 1), then why not N+1? And if
N+1, then why not N+2, and so on? Once above 1, there's no excuse not to
allow any N; hence, infinity.
Many hackers recall in this connection Isaac Asimov's SF novel The Gods
Themselves in which a character announces that the number 2 is impossible —
if you're going to believe in more than one universe, you might as well
believe in an infinite number of them.
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