Double point

Definitions

  • Webster's Revised Unabridged Dictionary
    • Double point (Geom) a point of a curve at which two branches cross each other. Conjugate or isolated points of a curve are called double points, since they possess most of the properties of double pointssee Conjugate). They are also called acnodes, and those points where the branches of the curve really cross are called crunodes. The extremity of a cusp is also a double point.
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Usage

In literature:

They also are double, and the interior arches are pointed; but the arches, within which they are placed, are circular.
"Architectural Antiquities of Normandy" by John Sell Cotman
I double-locked the door; I seized the poignard which I had so often used to protect my life, and pointed it against myself.
"Adventures in the Philippine Islands" by Paul P. de La Gironière
Soon after, the lugger doubled the point and disappeared.
"The Works of Robert Louis Stevenson" by Robert Louis Stevenson
Two uprights with double-pointed tacks or notches in the top.
"Primary Handwork" by Ella Victoria Dobbs
Then double these folded points, one each side, back to the main fold.
"What Shall We Do Now?: Five Hundred Games and Pastimes" by Dorothy Canfield Fisher
Heat to boiling point and strain through double cheese cloth, set aside.
"Fifty-Two Sunday Dinners" by Elizabeth O. Hiller
A ship doubling the point under sail appeared as a bright white speck.
"With the World's Great Travellers, Volume 1" by Various
At midnight, on the 26th we doubled Cape San Lucas, the extreme southern point of that long finger-like Peninsular of Lower California.
"Los Gringos" by H. A. (Henry Agustus) Wise
And his work, he pointed out, was continuous, with his assistant's services; he had to put up double meals to suit the watches.
"The Bonadventure" by Edmund Blunden
He was approached by the owners of the Bradshaw 1848 patent, who claimed control of the double-pointed shuttle.
"The Invention of the Sewing Machine" by Grace Rogers Cooper
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In poetry:

When pleasure smiles, and strews thy path with flow'rs,
And youthful fancy doubles every joy,
May brighter hopes attend thy gayest hours,
And point to bliss which time can ne'er destroy!
"To Miss ∗∗∗∗," by Jane Bowdler

In news:

The Lakers had three players reach double figures and used a 32-18 edge in points in the paint to move to 5-0 at home this season.
Price has a double-double with 17 points and 11 assists as Wizards win their second game of the preseason, 102-94, in Milwaukee.
Tanner Riley scored 23 points, Kevin Bailey had 14 and Ryan Nicholas just missed a double-double with 10 points and nine rebounds to give Portland an 81-60 victory over Portland State on Wednesday night.
Murphy Holloway scored 23 points and added eight rebounds as Mississippi placed four players in double figures Friday to defeat Lipscomb 91-45.
OXFORD — Murphy Holloway scored 23 points and added eight rebounds as Ole Miss placed four players in double figures Friday to defeat Lipscomb 91-45.
(AP) John Gillon was one of four players in double figures for Arkansas- Little Rock , posting 16 points, pulling five rebounds and adding four assists to lead the Trojans past Jacksonville 78-56 on Wednesday night.
Reserve guard Derrick Millinghaus scored 19 points and added five assists as Mississippi placed five scorers in double figures Friday night to defeat Arkansas- Little Rock 92-52.
(AP) — Reserve guard Derrick Millinghaus scored 19 points and added five assists as Mississippi placed five scorers in double figures Friday night to defeat Arkansas- Little Rock 92-52.
Mike Caffey scored 15 points, leading four Long Beach State players in double figures, and the 49ers beat Loyola Marymount 73-70 Thursday night.
NEW ORLEANS – Josh Davis posted his fifth double-double of the season and Kendall Timmons scored 18 points to lead Tulane over Loyola -New Orleans 69-57 Tuesday night.
Rachel Lenz led three players in double figures with 17 points as the Bunceton girls junior high basketball team defeated Malta Bend 47-29 in CCAA action Tuesday night at Bunceton.
Hand also had 12 points for her first double-double of the season, and five assists.
Markets Miss The Point As The FOMC Doubles Down On QE3.
Scarver scored 20 points and Dennis Tinnon posted a double-double as Marshall took control in the final 3 minutes to defeat Coppin State 69-63 Saturday night in the first meeting between the schools.
Gary Neal scored 29 points and Tony Parker had a triple-double to lead the San Antonio Spurs to a 134-126 overtime win against the Houston Rockets on Monday night.
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In science:

As we will see later, the rational double point pn of X (n) will play an important role in our argument.
A Simple Proof that Rational Curves on K3 are Nodal
The above lemma can be applied to a family of curves in the neighborhood of a three-fold rational double point xy = tα z .
A Simple Proof that Rational Curves on K3 are Nodal
Let ra ∈ Fa and rb ∈ Fb be the preimages of the rational double point pn+β of X (n+β ) .
A Simple Proof that Rational Curves on K3 are Nodal
This latter is, by definition, the moduli space of stable N0 -pointed curves of genus g , where a stable curve is a compact Riemann surface with at most ordinary double points such that all of its parts are hyperbolic.
The modular geometry of Random Regge Triangulations
The closure ∂Mg ,N0 of Mg ,N0 in Mg ,N0 consists of stable curves with double points, and gives rise to a stratification decomposing Mg ,N0 into subvarieties.
The modular geometry of Random Regge Triangulations
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