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on the λ-paracompact spaces
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نویسنده
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etebar masoumeh ,mehran simin ,namdari mehrdad ,soltanpour somayeh
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منبع
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اولين كنفرانس بين المللي رياضيات و كاربردهاي آن - 1400 - دوره : 1 - اولین کنفرانس بین المللی ریاضیات و کاربردهای آن - کد همایش: 00210-41497 - صفحه:0 -0
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چکیده
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a generalization of $lambda$-compact spaces and paracompact spaces are introduced and studied. an open cover of a space $x$ is called locally-$lambda$ if every point of the space has a neighborhood, say $g$, such that the family of the sets in this open cover that have nonempty intersections with $g$ is less than $lambda$, where $lambda$ is the least infinite cardinal number with this property. a topological space $x$ is said to be $lambda$-paracompact if every open cover has a locally-$lambda$ open refinement. it is shown that the space $igoplus_{sin{s}}{x_s}$ is a $lambda$-paracompact space if and only if for each $sin s$, $x_s$ is $lambda$-paracompact space.
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کلیدواژه
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locally-finite ,λ-compact ,paracompact ,metacompact
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آدرس
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, iran, , iran, , iran, , iran
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پست الکترونیکی
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s.soltanpour@put.ac.ir
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Authors
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