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Showing 1 to 9 of 9 for “"affine group"”.

  1. Cohomology Jumping Loci and the Relative Malcev Completion

    … invariants used to study the fundamental group of the complement X of a hyperplane arrangement are the Malcev completion of its fundamental group G and the cohomology groups of X with coefficients in rank one local systems. In this thesis, we develop a tool that unifies these two …

    duke Repository record for Cohomology Jumping Loci and the Relative Malcev Completion (opens in a new tab)

  2. Stable characters for symmetric groups and wreath products

    Given a Hopf algebra R, the Grothendieck group of C = R-mod inherits the structure of a ring. We define a ring [mathematical equation]), which is "the [mathematical equation] limit" of the Grothendieck rings of modules for the wreath products [mathematical equation]; it is the Grothendieck group of …

    mit Repository record for Stable characters for symmetric groups and wreath products (opens in a new tab)

  3. On groups with few 𝑝′-character degrees

    Seitz’s theorem asserts that a finite group has exactly one non-linear irreducible character of degree greater than one if and only if the group is either an extraspecial 2-group or the group is isomorphic to a one-dimensional affine group over some field. An extension of Seitz’s theorem is …

    pretoria Repository record for On groups with few 𝑝′-character degrees (opens in a new tab)

  4. On Lie Theory in the Verlinde Category

    … of a representation category of a finite group A famous theorem of Deligne states that, in characteristic p = 0, any symmetric tensor category of moderate growth is essentially a representation category of an affine supergroup scheme. This is not true in positive characteristic, with the …

    mit Repository record for On Lie Theory in the Verlinde Category (opens in a new tab)

  5. On Boolean functions, symmetric cryptography and algebraic coding theory

    … operation is related to a different copy of the affine group. So, our block cipher could be affine with respect to one of these hidden sums. We show conditions on the S-box able to prevent a type of trapdoors based on hidden sums, in particular we introduce the notion of Anti-Crooked function. …

    trento Repository record for On Boolean functions, symmetric cryptography and algebraic coding theory (opens in a new tab)

  6. Symmetries in algebraic Property Testing

    … property of being invariant under a 2-transitive group of permutations do not necessarily imply testing. On the positive side, we exhibit a large class of codes whose duals possess a strong structural property ('the single orbit property'). Namely, they can be specified by a single codeword of …

    mit Repository record for Symmetries in algebraic Property Testing (opens in a new tab)

  7. Gradings of Lie Algebras

    … This leads to an investigation of the Weyl group associated to a root system. This work allows us to describe how one can uniquely extend isomorphisms between root systems to isomorphisms between Lie algebras to which those root systems correspond. We are then able to describe the special …

    cape-town Repository record for Gradings of Lie Algebras (opens in a new tab)

  8. Zero Divisors, Group Von Neumann Algebras and Injective Modules

    … of the generalized Wyle-Heisenberg group in 𝑛² dimensions and its relations with Gabor's question from Gabor Analysis in the light of the time-frequency equation. We study the zero divisor conjecture in relation to the reduced 𝐶*-algebras and operator norm 𝐶*-algebras. For certain …

    vt Repository record for Zero Divisors, Group Von Neumann Algebras and Injective Modules (opens in a new tab)