Nearly Weak θ Refinable Spaces
Kang Su-ling
Abstract
Kang Su-ling
Abstract
The following results are proved:(1)A space X is nearly weak θ refinable if X is nearly discretely weak θ refinable expandable and for every open cover u={Uα:α∈∧} of then there is a dense set DX and a V=∪n∈ω Vn of open refinements of u such that for each x∈D there are n∈ω and α∈∧ with x∈Uα and st(x,Vn)∪β≤αUβ;(2)Let X=∏α∈∧Xα be|∧|—paracompact,then it is weakrefinable space if ∏α∈FXα is weak θ refinable space for every F∈[∧]ω.
A significance statement is not available in the OpenAlex record.
A contribution statement is not available in the OpenAlex record.
Method details are not available in the OpenAlex metadata.
Findings are not separately available in the OpenAlex metadata.
Limitations are not available in the OpenAlex metadata.
Application details are not available in the OpenAlex metadata.
The following results are proved:(1)A space X is nearly weak θ refinable if X is nearly discretely weak θ refinable expandable and for every open cover u={Uα:α∈∧} of then there is a dense set DX and a V=∪n∈ω Vn of open refinements of u such that for each x∈D there are n∈ω and α∈∧ with x∈Uα and st(x,Vn)∪β≤αUβ;(2)Let X=∏α∈∧Xα be|∧|—paracompact,then it is weakrefinable space if ∏α∈FXα is weak θ refinable space for every F∈[∧]ω.
Key concepts: Space (punctuation), Cover (algebra), Mathematics, Pure mathematics, Set (abstract data type), Discrete mathematics, Combinatorics, Physics