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X

Definitions

  • WordNet 3.6
    • adj x being one more than nine
    • n X street names for methylenedioxymethamphetamine
    • n X the 24th letter of the Roman alphabet
    • n x the 24th letter of the Roman alphabet
    • n X the cardinal number that is the sum of nine and one; the base of the decimal system
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: The largest LEGO castle that was ever built was built with 400,000 LEGO bricks and was 4.45 m x 5.22 m
    • X ĕks X, the twenty-fourth letter of the English alphabet, has three sounds; a compound nonvocal sound (that of ks), as in wax; a compound vocal sound (that of gz), as in example; and, at the beginning of a word, a simple vocal sound (that of z), as in xanthic. See Guide to Pronunciation, §§ 217, 270, 271.The form and value of X are from the Latin X, which is from the Greek Χ, which in some Greek alphabets had the value of ks, though in the one now in common use it represents an aspirated sound of k.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: 111,111,111 x 111,111,111 = 12,345,678,987,654,321
    • x The chemical symbol of xenon.
    • x In electricity, the symbol for reactance in alternating-current circuits.
    • x In wireless telegraphy, a local disturbance causing a false signal; a stray.
    • x The twenty-fourth letter and nineteenth consonant-sign in the English alphabet. In the Latin alphabet, from which it comes to ours, it followed next after U or V (which were then only one letter: see U), and was till a late date the last letter in that alphabet, till Y and Z (see those letters) were finally added from the Greek to represent peculiar Greek sounds. The sign X was a Greek addition to the Phenician alphabet; it had in early Greek use a divided value: in the eastern alphabets, that of kh (besides the signs for ph and th); in the western, that of ks (besides the signs for ps and ts or ds). The former of the two came afterward to be the universally accepted value in Greece itself; while the latter was carried over into Italy, and so became Roman, and was passed on to us. Hence our X has in general the Latin value ks; but as initial (almost only in words from the Greek, and there representing a different Greek character, the ksi) we have reduced it to the z-sound, as in Xerxes, xanthous. In many words also, especially among those beginning with ex, it is made sonant, or pronounced as gz. The accepted rule for this is that the gz- sound is given after an unaccented before an accented vowel, as in exért, exilic (egzert, egzilic), over against éxercise, éxile (eksercize, eksīl). But usage does not follow the rule with exactness, and many cultivated speakers disregard the distinction altogether, pronouncing everywhere alike ks (or kz). In any case, the sign X is superfluous in English, as it was in Latin and in Greek; it denotes no sound which is not fully provided for otherwise. In Old English it was sometimes used for sh, as in xal = shall.
    • x As a numeral, X stands for ten. When laid horizontally (), it stands for a thousand, and with a dash over it (), it stands for ten thousand.
    • x As an abbreviation, X. stands for Christ, as in Xn. (Christian), Xmas. (Christmas).
    • x As a symbol: In ornithology, in myological formulas, the symbol of the semitendinosus muscle.
    • x In mathematics:
    • x [lowercase] In algebra, the first of the unknown quantities or variables.
    • x [l. c] In analytical geometry, an abscissa or other rectilinear point-coördinate.
    • x In mechanics, the component of a force in the direction of the axis of x.
    • x Originally, a mark on brewers' casks; hence, a name given to ale of a certain quality. Compare XX, XXX.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: If you take any number between 1 & 9 and multipy them by 9 the sum of the two numbers will always be 9 (ex: 7 X 9 = 63 ; 6 + 3 = 9)
    • X the twenty-fourth letter in our alphabet, having in modern English the value of ks, which it had in Anglo-Saxon—except at the beginning of a word, where it is pronounced like z. X as an abbreviation represents the word Christ—Xian, Xmas; x in algebra is the first of the unknown quantities; and the use of X, XX, and XXX on barrels of stout is a well-known way of indicating the quality.—X-rays, the name given by Röntgen of Würzburg in 1895 to those dark or invisible rays emitted, under the influence of an electric current, from a glass-bulb highly exhausted of air through an aluminium window into a close box, and which when passed through the hand or other part of the body imprint a shadow-picture of the bones on a sensitive photographic plate—a discovery of high value in surgery, enabling a bullet, &c., embedded in the flesh to be carefully localised.
    • ***

Quotations

  • Gore Vidal
    Gore%20Vidal
    “Democracy is supposed to give you the feeling of choice, like Painkiller X and Painkiller Y. But they're both just aspirin.”
  • R A Dickson
    R A Dickson
    “X is work. Y is play. Z is keep your mouth shut.”
  • Albert Einstein
    Albert%20Einstein
    “If A equals success, then the formula is A equals X plus Y and Z, with X being work, Y play, and Z keeping your mouth shut.”

Idioms

X factor - The dangers for people in the military that civilians do not face, for which they receive payment, are known as the X factor.
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X marks the spot - This is used to say where something is located or hidden.
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X-rated - If something is x-rated, it is not suitable for children.
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Usage

In literature:

For once forgetting it, Charles X. fell.
"Memoirs To Illustrate The History Of My Time" by François Pierre Guillaume Guizot
This expression indicates a specific objective, the capture of X Island.
"Sound Military Decision" by U.s. Naval War College
The wood-work consists of 2 parts; the base, B, is 6 x 4 x 3/4 in., and the back, A, is 6 x 5 x 1/2 in.
"How Two Boys Made Their Own Electrical Apparatus" by Thomas M. (Thomas Matthew) St. John
X. is thirty years of age.
"The Sexual Life of the Child" by Albert Moll
THE COUNTESS IN LOW SOCIETY CHAPTER X.
"The Works Of George Meredith A Linked Index to the Project Gutenberg Editions" by George Meredith
TO MR. DUMAS, May 6, 1789 LETTER X.
"The Memoirs, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson A Linked Index to the Project Gutenberg Editions" by Thomas Jefferson
Chase of the White Hare CHAPTER X.
"Stories And Tales Of The Irish A Linked Index to the Project Gutenberg Editions" by William Carleton
THE GREAT ACTOR RETURNS TO FILL THE STAGE CHAPTER X.
"The Works Of Edward Bulwer-Lytton A Linked Index to the Project Gutenberg Editions" by Edward Bulwer-Lytton
I am the Door (chapter x:7).
"The Lord of Glory" by Arno Gaebelein
Scharwenka's Pianoforte Concerto given by Theodore Thomas in New York City, with X. Scharwenka as soloist.
"Annals of Music in America" by Henry Charles Lahee
Figure 137 shows a 24 x 60 shop with space for three cars.
"The Automobile Storage Battery" by O. A. Witte
X, Fresh Ham and Chap.
"Cooking and Dining in Imperial Rome" by Apicius
There were five of us on the X-flyer.
"Astounding Stories of Super-Science, November, 1930" by Various
The X-ray tube flickered with a greenish glow.
"Astounding Stories, March, 1931" by Various
About 2 A. M. we all gathered in Madame X.
"Liége on the Line of March" by Glenna Lindsley Bigelow
No terms in x or x^2 need be considered.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4" by Various
C. oval, 18-4/5 x 23-3/5.
"Great Masters in Painting: Rembrandt van Rijn" by Malcolm Bell
X 2 in., fixed diagonally between each joist in continuous rows, the rows being about 6 ft. apart.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4" by Various
It is you who will return to X., and that, very soon.
"Lost Man's Lane" by Anna Katharine Green
Then what relation does X bear to Y?
"A Critical History of Greek Philosophy" by W. T. Stace
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In poetry:

X was King Xerxes, whom
Papa much wished to know;
But this he could not do, because
Xerxes died long ago.
"Nonsense Alphabet" by Edward Lear
X was a kind of X-cuse
Of a some-sort-o'-thing that got loose
Before we could name it,
And cage it, and tame it,
And bring it in general use.
"Billy's Alphabetical Animal Show" by James Whitcomb Riley
X. And I will hum the song thou lov'st,
Or thou each bosom-chord shalt thrill
With thine own soul-dissolving strain,
Or silent, we'll be happier still.
"The Boudoir" by Sydney Owenson
X. Neither thy neighbour's house, nor yet his wife,
Or man or maid, horse, ass, or working beast,
Or any thing of his, desire thro' life,
But that of which thou justly art possest.
"The Ten Commandments " by Rees Prichard
X. Example's baleful force, temptation's wile,
Guided the wand'rings of his pilgrim years;
Fancy 's warm child, deceiv'd by Fortune 's smile,
That steep'd th' expecting glance in mis'ry's tears.
"The Minstrel Boy" by Sydney Owenson
X. And now since that sweet day some years have flown by,
And some golden hours of those years have been mine;
But each year as it fled never twisted one tie,
Round my heart, like that tie which first bound it to thine.
"To Mrs. Lefanue" by Sydney Owenson

In news:

James MinchinLinkin Park will perform a show Friday night at X Games LA to celebrate the launch of X Games MUSIC.
X Games X Center Roll out.
Mirra has medaled in nearly every X Games held since the mid-1990s and holds the record for most X Games podium visits with 24.
Model VWB-5121 measures 51 x 21 x 35 in.
Eizo Nanao Technologies Inc. EIZO's RadiForce LS560W is a large widescreen monitor with a 3840 x 2160 native resolution and a 56-inch screen area roughly equal in size to six 1.3 megapixel (1280 x 1024) monitors or four full HD monitors.
The Model HS84 furnace has two 12-inch-high x 12-inch-wide x 24-inch-long chambers mounted in a space-saving arrangement.
"The X Factor": The Top 8 were announced on "The X Factor" Thursday, Nov 22, on FOX.
The arena size is 60' x60' and comes with 4" x 4" posts that are 12" tall, as well as 7/8" x 3 rails that are 7.5' long.
Rebecca Tobey, Chinook, bronze, 6 x 5 x 2.
13" x 13" x 12" Cost: $199.99 877/572-9592 emergencyresponderproducts.com.
Cisco has announced it will support OpenFlow in two switches, the Catalyst 3570-x and 3560-x, but Big Switch said it had not been able to test interoperability between its controllers and the Cisco switches.
'12 x 12 x 12' Art Sale At Hunt Library In Falls Village.
"The X Factor" Tonight, we'll learn the top four semi-finalists on "The X Factor".
50 years after forming X-Men, Professor X dead.
Grizzly Bear, river stone/bronze, 12 x 8 x 5 20121285.
***

In science:

A(x)ϕ(x) + B (x)ψ(x) m(x)ψ ′ (x) = −C (x)ϕ(x) − A(x)ψ(x) and m(x), A(x), B (x), C (x) are polynomials.
Determinantal random point fields
I{Aλ(x) (x)}(j ) ≥ δ∗ γ−1/2} l(x) ≡ inf {l > a(x) : and consider the following decomposition of A(x): B λ(x) (x) = (cid:8)i ∈ Aλ(x) (x); i ≤ l(x)(cid:9) and B−λ(x) (x) = A(x) \ B λ(x) (x).
One-dimensional random field Kac's model: localization of the phases
If f (x) ∈ k [x], let f (x) ∈ F[x] denote the image of f (x) by the injective homomorphism k [x] ֒→ F[x]; then f (x) ∈ m if and only if f (x) ∈ (x − x(a)).
Desingularization of toric and binomial varieties
Thus, consider the K -dimensional integral Z = Z eS(x)dK x = Z eS0 (x)+V (x)dK x = Z e− 1 2 x⊤Bx eV (x)dK x with an action S(x) in the form of an unperturbed quadratic action S0(x) = − (cid:229)ab xaBabxb/2 plus a perturbation V (x).
Random Feynman Graphs
Random measures considered here assume the form Px∈X ξ (x; X )δx, where X is a random point set in Rd, δx is the Dirac point measure at x and ξ (x; X ) is a weight representing the interaction of x with respect to X and is usually defined in terms of the underlying geometry.
Gaussian limits for random measures in geometric probability
Writing |Xκn (x)| for the total population of the branching process Xκn (x), whenever |Xκm (x)| < ∞ for some m, we have |Xκn (x)| ց |Xκ (x)| as n → ∞; indeed, for large n the entire processes Xκn (x) and Xκ (x) coincide.
The phase transition in inhomogeneous random graphs
From (6.3), with probability 1 either |Xκ (x)| = ∞, in which case |Xκn (x)| ≥ |Xκ (x)| = ∞ for all n, or there is an m with |Xκm (x)| < ∞, in which case |Xκn (x)| = |Xκ (x)| for all large enough n.
The phase transition in inhomogeneous random graphs
When ν is a probability density function and f a function, we will use the usual notations ν (f ) = R ν (x)f (x)λ(dx), kf (x) = R k(x, x′ )f (x′ )λ(dx′ ), ν k(x) = R ν (x′ )λ(dx′ )k(x′, x), and, ν kf = R ν (x)kf (x)λ(dx) = R ν k(x)f (x)λ(dx) = R R ν (x)k(x, x′ )f (x′ )λ(dx)λ(dx′ ).
Comparison of Resampling Schemes for Particle Filtering
Comparing (4), (5) (and subtracting val(c1 )) we see that val((a − x)m − (a − x′ )m − (x′ − x)m ) > val((x − x′ )m ) = val((a − x′ )m ) = val((a − x)m ) Let u = (a − x′ )/(x′ − x); then (a − x)/(x′ − x) = u + 1, val(u) = 0 = val(u + 1), and val((u + 1)m − um − 1) > 0.
Integration in valued fields
This lagrangian differs from (15) by its sign before m2, but still invariant to group of global transformations: ϕ(x) → ϕ(x) = exp(igs)ϕ(x), ϕ∗(x) → ϕ∗(x) = exp(−igs)ϕ∗(x) χ(x) → χ(x) = exp(igs)χ(x), χ∗(x) → χ∗ (x) = exp(−igs)χ∗ (x).
About Spontaneous Symmetry Breaking in the Field Theory with Fundamental Mass
E{h(x,ξ )} + h(x,ξ ) ∂x (x, ξ )| + |ϕ′ ( h(x,ξ ) • E[supx∈I {| ∂h [E{h(x,ξ )}]2 |E{ ∂h ∂x (x, ξ )}|)}] < ∞; • both y → h(x0, y ) and y → ∂ ∂x log h(x, y )|x=x0 are monotone on J .
A subdiffusive behaviour of recurrent random walk in random environment on a regular tree
Py∈X,y 6=x γ 1 x,yΦ(y, x|λ) + λγ 1 x,x and if x, y, w ∈ X are distinct vertices such that every path from x to y contains w then Φ(x, y |λ) = Φ(x, w|λ)Φ(w, y |λ).
Weak survival for branching random walks on graphs
H (U, x)0 := U, H (U, x)α+1 := H (U, x)α ∪ S{X : x ∈ X ∧ µ(X ) ⊆ H (U, x)α}, H (U, x)λ := S{H (U, x)α : α < λ} for limit(λ), H (U, x) := S{H (U, x)α : α < κ} for κ sufficiently big (card(Z ) suffices, as the procedure trivializes, when we cannot add any new elements).
Domain closure conditions and definability preservation
Indeed, if there exists a x ∈ T M \ f (a) then we select a x′ ∈ f (a)+ such that x′ < x and x, x′ ∈ L such that x ∈ f (x), x′ ∈ f (x′ ) and f (x) ∩ f (x′ ) =
Lattices which can be represented as lattices of intervals
Set v(x) = E∗ exp(−θ(ST (x) − x)) and note that v(x) = E∗ exp(−θ(ST (x) − x))I (T (x) < τ+ (1)) + E∗ exp(−θ(ST (x) − x))I (Sτ+ (1) > x, T (x) ≥ τ+ (1)) + E∗ exp(−θ(ST (x) − x))I (Sτ+ (1) ≤ x, T (x) ≥ τ+ (1)).
Tail asymptotics for the maximum of perturbed random walk
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