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  2. Grünwald–Letnikov derivative - Wikipedia

    en.wikipedia.org/wiki/Grünwald–Letnikov...

    In mathematics, the Grünwald–Letnikov derivative is a basic extension of the derivative in fractional calculus that allows one to take the derivative a non-integer number of times.

  3. Ginzburg–Landau theory - Wikipedia

    en.wikipedia.org/wiki/Ginzburg–Landau_theory

    One GL-type superconductor is the famous YBCO, and generally all cuprates. [ 1 ] Later, a version of Ginzburg–Landau theory was derived from the Bardeen–Cooper–Schrieffer microscopic theory by Lev Gor'kov , [ 2 ] thus showing that it also appears in some limit of microscopic theory and giving microscopic interpretation of all its parameters.

  4. List of glossing abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_glossing_abbreviations

    For example, NPST non-past is not listed, as it is composable from N-non-+ PST past. This convention is grounded in the Leipzig Glossing Rules. [2] Some authors use a lower-case n, for example n H for 'non-human'. [16] Some sources are moving from classical lative (LAT, -L) terminology to 'directional' (DIR), with concommitant changes in the ...

  5. Conference proceedings - Wikipedia

    en.wikipedia.org/wiki/Conference_proceedings

    The quality of the papers is typically ensured by having external people read the papers before they are accepted in the proceedings. The level of quality control varies considerably from conference to conference: some have only a binary accept/reject decision, others go through more thorough feedback and revisions cycles ( peer reviewing or ...

  6. Linear group - Wikipedia

    en.wikipedia.org/wiki/Linear_group

    They arise as linear algebraic groups, that is, as subgroups of GL n defined by a finite number of equations. Basic examples are orthogonal, unitary and symplectic groups but it is possible to construct more using division algebras (for example the unit group of a quaternion algebra is a classical group).

  7. General linear group - Wikipedia

    en.wikipedia.org/wiki/General_linear_group

    In mathematics, the general linear group of degree n is the set of n×n invertible matrices, together with the operation of ordinary matrix multiplication.This forms a group, because the product of two invertible matrices is again invertible, and the inverse of an invertible matrix is invertible, with the identity matrix as the identity element of the group.

  8. Langlands program - Wikipedia

    en.wikipedia.org/wiki/Langlands_program

    In mathematics, the Langlands program is a set of conjectures about connections between number theory and geometry.It was proposed by Robert Langlands (1967, 1970).It seeks to relate Galois groups in algebraic number theory to automorphic forms and representation theory of algebraic groups over local fields and adeles.

  9. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    GL – gas lift; GL – ground level; GLE – ground level elevation (generally in metres above mean sea level [citation needed]) GLM – gas lift mandrel (alternative name for side pocket mandrel) GLR – gas-liquid ratio; GLT – GLT log [clarification needed] GLV – gas lift valve; GLW – [citation needed] GM – gas migration; GOC – gas ...