Epsilon-Tensor
41Stewart-Walker lemma — The Stewart Walker lemma provides necessary and sufficient conditions for the linear of a tensor field to be gauge invariant. Delta delta T = 0 if and only if one of the following holds1. T {0} = 02. T {0} is a constant scalar field 3. T {0} is a …
42Yield (engineering) — The yield strength or yield point of a material is defined in engineering and materials science as the stress at which a material begins to deform plastically. Prior to the yield point the material will deform elastically and will return to its… …
43Upper convected time derivative — In continuum mechanics, including fluid dynamics upper convected time derivative or Oldroyd derivative is the rate of change of some tensor property of a small parcel of fluid that is written in the coordinate system rotating and stretching with… …
44Maxwell's equations — For thermodynamic relations, see Maxwell relations. Electromagnetism …
45Clifford algebra — In mathematics, Clifford algebras are a type of associative algebra. They can be thought of as one of the possible generalizations of the complex numbers and quaternions.[1][2] The theory of Clifford algebras is intimately connected with the… …
46List of mathematics articles (E) — NOTOC E E₇ E (mathematical constant) E function E₈ lattice E₈ manifold E∞ operad E7½ E8 investigation tool Earley parser Early stopping Earnshaw s theorem Earth mover s distance East Journal on Approximations Eastern Arabic numerals Easton s… …
47Null dust solution — In mathematical physics, a null dust solution (sometimes called a null fluid) is a Lorentzian manifold in which the Einstein tensor is null. Such a spacetime can be interpreted as an exact solution of Einstein s field equation, in which the only… …
48Coalgebra — In mathematics, coalgebras or cogebras are structures that are dual (in the sense of reversing arrows) to unital associative algebras. The axioms of unital associative algebras can be formulated in terms of commutative diagrams. Turning all… …
49Penrosesche graphische Notation — Die penrosesche graphische Notation – auch als penrosesche diagrammatische Notation, Tensor Diagramm Notation oder auch einfach Penrose Notation bezeichnet – ist eine von Roger Penrose vorgeschlagene Notation in der Physik und… …
50Kovariante Ableitung — Die kovariante Ableitung ist ein verallgemeinerter Ableitungsbegriff in nahezu beliebigen Räumen, genauer gesagt in differenzierbaren Mannigfaltigkeiten. Die kovariante Ableitung bedarf zu ihrer Definition einer zusätzlichen, räumlich… …
