On Isomorphisms with Small Bound

Small Bound Isomorphisms of the Domain of a Closed ∗-derivation

The domain (δ) of a closed ∗-derivation δ in C(K) (K : a compact Hausdorff space) is a generalization of the space C(1)[0,1] of differentiable functions on [0,1]. In this paper, a problem proposed by Jarosz (1985) is studied in the context of derivations instead of C(1)[0,1].

played on partial isomorphisms

We study the poset 〈Iκ ,⊆〉 as a measure of how similar the structures A and B are to each other. A subset X of Iκ has the κ back-and-forth property if for all λ < κ ∀p ∈ X[∀a ∈ λA∃b ∈ B (p ∪ {〈a(i), b(i)〉 : i < λ} ∈ X) ∧ ∀b ∈ λB∃a ∈ A(p ∪ {〈a(i), b(i)〉 : i < λ} ∈ X)]. It is obvious that there is a largest κ-back-and-forth set which we denote by I∗ κ . The structures A and B are said to be parti...

on some bayesian statistical models in actuarial science with emphasis on claim count

چکیده ندارد.

Isomorphisms and classification of Cayley graphs of small valencies on finite Abelian groups

Finding Small Weight Isomorphisms with Additional Constraints is Fixed-Parameter Tractable

Lubiw showed that several variants of Graph Isomorphism are NPcomplete, where the solutions are required to satisfy certain additional constraints [14]. One of these, called Isomorphism With Restrictions, is to decide for two given graphs X1 = (V,E1) and X2 = (V,E2) and a subset R ⊆ V × V of forbidden pairs whether there is an isomorphism π from X1 to X2 such that i π 6= j for all (i, j) ∈ R. W...