On θ-Totally Disconnected and θ-Light Mappings

On (θ, θ)-Derivations in Semiprime Rings

β , θ , ∂ , I ) - Continuous Mappings and their Decomposition

In this paper we introduce the concept of (α, β, θ, ∂, I)-continuous mappings and prove that if α, β are operators on the topological space (X, τ) and θ, θ∗ , ∂ are operators on the topological space (Y, φ) and I a proper ideal on X, then a function f : X → Y is (α, β, θ ∧ θ∗, ∂, I)-continuous if and only if it is both (α, β, θ, ∂, I) -continuous and (α, β, θ∗, ∂, I)-continuous, generalizing a ...

Θ ∗ partner to the Θ ( 1540 ) baryon

If the exotic baryon Θ(1540) is udud¯ s with J P = 1 2 + , we predict that there is a Θ * (1540− 1680) with J P = 3 2 +. The width Γ(Θ * → KN) is at least a factor of three larger than Γ(Θ). The possibilities of Θ * → KN π or Θγ via M 1 and E2 multipoles are discussed. A major plank in establishing the constituent quark model was the absence of baryons with strangeness +1. The announcement of s...

On Pre-θ-Open Sets and Two Classes of Functions

On Θ-precontinuous Functions

We introduce a new class of functions called θ-precontinuous functions which is contained in the class of weakly precontinuous (or almost weakly continuous) functions and contains the class of almost precontinuous functions. It is shown that the θprecontinuous image of a p-closed space is quasi H-closed. 2000 Mathematics Subject Classification. 54C08.