Definition of "basis"
noun:
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A starting point, base or foundation for an argument or hypothesis.
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An underlying condition or circumstance.
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Regular frequency.
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In a vector space, a linearly independent set of vectors spanning the whole vector space.
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Amount paid for an investment, including commissions and other expenses.
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A collection of subsets ("basis elements") of a set, such that this collection covers the set, and for any two basis elements which both contain an element of the set, there is a third basis element contained in the intersection of the first two, which also contains that element.
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