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The Arrows block (U+2190–U+21FF) contains line, curve, and semicircle arrows and arrow-like operators. The math subset of this block is U+2190–U+21A7, U+21A9–U+21AE, U+21B0–U+21B1, U+21B6–U+21B7, U+21BC–U+21DB, U+21DD, U+21E4–U+21E5, U+21F4–U+21FF.
d'Alembert operator. In special relativity, electromagnetism and wave theory, the d'Alembert operator (denoted by a box: ), also called the d'Alembertian, wave operator, box operator or sometimes quabla operator [1] ( cf. nabla symbol) is the Laplace operator of Minkowski space. The operator is named after French mathematician and physicist ...
APL is going to execute from right-to-left. Step 1 {of topmost APL code entered at left}) 4-5 = -1. Step 2) 3 times -1 = -3. Step 3) Take the floor or lower of 2 and -3 = -3. Step 4) Divide 1 by -3 = -0.3333333333 = final result. An operator may have function or data operands and evaluate to a dyadic or monadic function.
Since the stabilizer operators of the toric code are quasilocal, acting only on spins located near each other on a two-dimensional lattice, it is not unrealistic to define the following Hamiltonian, H T C = − J ∑ v A v − J ∑ p B p , J > 0. {\displaystyle H_{\rm {TC}}=-J\sum _{v}A_{v}-J\sum _{p}B_{p},\,\,\,J>0.}
Code Decimal Octal Description Abbreviation / Key C0: U+0000 0 000 Null character: NUL U+0001 1 001 Start of Heading: SOH / Ctrl-A U+0002 2 002 Start of Text: STX / Ctrl-B U+0003 3 003 End-of-text character: ETX / Ctrl-C 1: U+0004 4 004 End-of-transmission character: EOT / Ctrl-D 2: U+0005 5 005 Enquiry character: ENQ / Ctrl-E U+0006 6 006 ...
Airline codes IATA ICAO Airline Call sign Country Comments JTN JET TEST United States JGJ Jinggong Jet: GLOBAL JINGGONG China 2014, 2023: JNY Journey Aviation: ROCKBAND United States 2023: Callsign "ROCKBAND"; Former Call Sign/Telephony Designator: UNIJET-ROCKBAND (2014) JKR Justice Air Charter: JOKER United States
ACP-131 [1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States. When the meanings of the codes contained in ACP-131 are translated into various ...
In Clifford analysis, the operator D : C ∞ (R k ⊗ R n, S) → C ∞ (R k ⊗ R n, C k ⊗ S) acting on spinor valued functions defined by f ( x 1 , … , x k ) ↦ ( ∂ x 1 _ f ∂ x 2 _ f … ∂ x k _ f ) {\displaystyle f(x_{1},\ldots ,x_{k})\mapsto {\begin{pmatrix}\partial _{\underline {x_{1}}}f\\\partial _{\underline {x_{2}}}f\\\ldots ...
In quantum mechanics, the exchange operator , also known as permutation operator, is a quantum mechanical operator that acts on states in Fock space. The exchange operator acts by switching the labels on any two identical particles described by the joint position quantum state . [1]
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