system of notations
91Principia Mathematica — For Isaac Newton s book containing basic laws of physics, see Philosophiæ Naturalis Principia Mathematica. The title page of the shortened version of the Principia Mathematica to *56. The Principia Mathematica is a three volume work on the… …
92Natural deduction — In logic and proof theory, natural deduction is a kind of proof calculus in which logical reasoning is expressed by inference rules closely related to the natural way of reasoning. This contrasts with the axiomatic systems which instead use… …
93Imaginary unit — i in the complex or cartesian plane; real numbers fall on the horizontal axis, and imaginary numbers fall on the vertical axis In mathematics, the imaginary unit allows the real number system ℝ to be extended to the complex number system ℂ, which …
94Bracket — 〈 redirects here. It is not to be confused with く, a Japanese kana. This article is about bracketing punctuation marks. For other uses, see Bracket (disambiguation). Due to technical restrictions, titles like :) redirect here. For typographical… …
95Gamelan — A gamelan is a musical ensemble of Indonesia typically featuring a variety of instruments such as metallophones, xylophones, drums, and gongs; bamboo flutes, bowed and plucked strings, and vocalists may also be included. The term refers more to… …
96Dance notation — La Cachucha, by Friedrich Albert Zorn. Dance notation is the symbolic representation of dance movement. It is analogous to movement notation but can be limited to representing human movement and specific forms of dance such as Tap dance. Various… …
97Marius Petipa — Maestro Marius Ivanovich Petipa, Premier Maître de Ballet of the St. Petersburg Imperial Theatres. St. Petersburg, 1887. Birth name Marius Alphonse Petipa …
98Detailed balance — The principle of detailed balance is formulated for kinetic systems which are decomposed into elementary processes (collisions, or steps, or elementary reactions): At equilibrium, each elementary process should be equilibrated by its reverse… …
99History of Lorentz transformations — The Lorentz transformations relate the space time coordinates, (which specify the position x , y , z and time t of an event) relative to a particular inertial frame of reference (the rest system ), and the coordinates of the same event relative… …
100Gain (lasers) — Gain (or amplification) in laser physics is a process, where the medium transfers part of its energy to the emitted electromagnetic radiation, resulting in an increase in laser power. This is basic principle of all lasers.Quantitatively, the… …
