# Which symbol means parallel

## Online library

### Mathematical signs

[335]**Mathematical signs**, abbreviations commonly used in mathematics.

The most common are: = equal; ≡ identically equal, congruent (in number theory); > greater than; *n* first numbers); () Sign of the binomial coefficients, e.g.

*a*| *= a*); *±* plus or minus; ∫ integral sign. In addition there are the brackets (); []; {}. - Even if the choice of letters in mathematical expressions is arbitrary, it is customary to choose certain letters for certain sizes. The most common of these standing terms are:

*a, b, c ...*Coefficients; *c* Constant; *d* Signs of differentiation, difference in arithmetic series, number of colons in a curve; ∂ signs of partial differentiation; *e*Basis of the natural logarithm system, eccentricity (in conic sections), unit (in number theory), finite number; *f*Coefficient of friction, function; *G*Acceleration due to gravity; *H*Height; *i* Square root of the negative unit (sign of imaginary numbers); *j* imaginary third root of unity; *k* Class of curves, modules of elliptic integrals; *l* Natural logarithm sign; *m*Center line, mass; *n* indefinite number; *O* Order of a curve; *p*Gender of a curve, *p*-Function (s. *Sigma functions*), ∂*z /*∂*x,*Parameters of conic sections, acceleration; *p, q, r* Line coordinates in space; *q* Interest factor, rank, ∂*z /*∂*y;*Cross-section; *r* Pension, radius, ∂^{2}*z /*∂*x*^{2}, Substitution, number of return points of a curve, torsion radius; *s*Sum, curve arc, ∂^{2}*z /*∂*x*∂*y,* Power sums of the roots of an equation; *t*Time, median line, ∂^{2}*z /*∂*y*^{2}, Number of double tangents of a curve; *u* Links of rows; *and many more* Line coordinates in the plane; *v*Speed; *w* Probability, number of turning points: *x, y, z* Unknown, variable, point coordinates; *z* complex variables.

*α, β, γ* known angles, coefficients; *δ* any small size, signs of variation, signs of the Aronhold process, *ε ±* 1, any small size, any small parameter; *ζ* Zeta function (s. *Sigma functions*), Changeable; *η* Changeable; *ϑ*Angle, theta function, real fraction, *χ*Module of elliptical integrals, line coordinate in space; *λ*Parameter; *ξ* Changeable; *π* Ratio of the circumference to the diameter, line coordinate in space; *ρ*Radius, proportionality factor, radius of curvature, line coordinate in space; *σ* Sigma function; *φ*Angles, adjoint curves, number theoretical function; *ψ, χ*Angle; *ω* Period, homogenizing variable, angular velocity, rolling angle in roulette; *ώ* infinitely increasing number.

*B.* Bernoullian Numbers; *C.* Constant, Euler's constant (0.57721566 ...); *D.* Determinant, discriminant; *E.* complete elliptical integral II. genus, Euler's numbers; *F.*Focal point, area, hypergeometric series, elliptical integral I. genus; *G*Group; *J* Cylinder function; *K* complete elliptical integral I. genus, circle, force, conic section; *L.* straight line; *M.*Modules; *O* Origin, surface; *P.* Point, spherical function; *Q*Weight; *R.* Remainder of series, resultant; *S.*Substitution; *T*Tangent, living force; *U*Job; *V*Potential, volume; *X* infinitesimal transformation. [335]

*Β*Beta function; *Γ* Gamma function; *Δ* Delta amplitude, transformation determinant, size that converges to zero; *Π*Product, elliptical integral III. Genus; *Σ* Sum symbol; *Ω* Omega process; *P.* Power series.

Some letter combinations also serve as abbreviations: e.g. sin, cos, tg, cotg, sec, cosec for the goniometric and arc sin etc. for the cyclometric functions; log or lg logarithm. Further abbreviations can be found in the mathematical sign languages (see literature).

Literature (for sign languages): [1] Schröder, Lectures on the Algebra of Logic, I-III, Leipzig 1890-95. - [2] Peano, Notations de logique mathématique, Turin 1894. - [3] Frege, conceptual writing, Halle 1879.

Wolfing.

- How did Krishna die in the Mahabharata
- Does your dog talk to you
- How do I overcome gloom
- Airbnb hosts collect fees for stained linen
- Which state started the public school system?
- Why do people like Bloody Mary cocktails
- What is number 7
- R Studio is free
- Where is the capital of Indonesia
- Are cancellable contracts enforceable
- How can I help alkaline soil
- Collagen peptides are protein
- Should I create two separate YouTube channels
- What people from committing perjury prevents
- When should I learn Sass
- Is numerology's life path prediction true?
- Who was a bodhisattva in Hindu history
- We can sell my bikes
- What is Delta in Cross Validation
- Why is the phone called OnePlus One
- Sleep deprivation can reduce social anxiety
- Can I get admission to Ashoka University?
- Is religious fundamentalism misunderstood?
- What will Russia be after Vladimir Putin