what is pseudo metric
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a pseudometric spaceis a generalized metric space in which the distance between two distinct points can be zero. In the same way as every normed space is a metric space, every seminormed space is a pseudometric space. Because of this analogy the term semimetric space (which has a different meaning in topology) is sometimes used as a synonym, especially in functional analysis.
bhaikalim3:
sir. xan we say in. one. word. its. inverse of. matric
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The pseudo-inverse is the "closest" answer to AX=I, in the sense that the norm |AX−I|2 is smallest. It's 0 when the inverse exists of course.
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