Corank and normal equivolent of Infinite Matrices over a sfield are difined, and a proof that any row-column-finite infinite matrix over a sfield is existence and unique is given. 摘要定義了除環(huán)上無(wú)限方陣的余秩和正則等價(jià)，證明了除環(huán)上每個(gè)行列有限的無(wú)限方陣的余秩存在且唯一。
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