- two-bridge knot
- мат.двухмостиковый узел
English-Russian scientific dictionary. 2008.
two-bridge knot
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2-bridge knot — In mathematics, a 2 bridge knot is a knot which can be isotoped so that the natural height function given by the z coordinate has only two maxima and two minima as critical points.Other names for 2 bridge knots are rational knots, 4 plats, and… … Wikipedia
Bridge number — In a mathematical field of Knot theory, the Bridge number is an invariant of a knot. It is defined as the minimal number of bridges required in all the possible bridge representations of a knot. A bridge representation of a knot is a… … Wikipedia
List of knot theory topics — Knot theory is the study of mathematical knots. While inspired by knots which appear in daily life in shoelaces and rope, a mathematician s knot differs in that the ends are joined together so that it cannot be undone. In precise mathematical… … Wikipedia
Knot invariant — In the mathematical field of knot theory, a knot invariant is a quantity (in a broad sense) defined for each knot which is the same for equivalent knots. The equivalence is often given by ambient isotopy but can be given by homeomorphism. Some… … Wikipedia
Root-knot nematode — Larva of root knot nematode, Meloidogyne incognita, magnified 500×, shown here penetrating a tomato root Scientific classification Kingdom … Wikipedia
Blood Knot — Infobox Play name = Blood Knot image size = caption = writer = Athol Fugard characters = Morris Zachariah mute = setting = date of premiere = 1961; Broadway revival 1986 (John Golden Theatre) country of Origin = South Africa original language =… … Wikipedia
Crossing number (knot theory) — In the mathematical area of knot theory, the crossing number of a knot is the minimal number of crossings of any diagram of the knot. It is a knot invariant. By way of example, the unknot has crossing number zero, the trefoil knot three and the… … Wikipedia
Milford-Montague Toll Bridge — Infobox Bridge bridge name= Milford Montague Toll Bridge caption= Milford Montague Bridge official name= Milford Montague Toll Bridge also known as= Milford Montague Bridge US 206 Toll Bridge carries= 2 lanes of U.S. Route 206 crosses= Delaware… … Wikipedia
Milford–Montague Toll Bridge — Milford Montague Toll Bridge Official name Milford Montague Toll Bridge Other name(s) Milford Montague Bridge US 206 Toll Bridge Carries 2 lanes of U.S. Route 206 Crosses Delaware River … Wikipedia
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Allen Hatcher — Allen Edward Hatcher is an American topologist and also a noted author. His book Algebraic Topology , which is the first in a series, is considered by many to be one of the best introductions to the subject.He received his Ph.D. under the… … Wikipedia
