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5 Cards in this Set
- Front
- Back
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p neighborhood
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N(X,D)={y:D(x,y)<p}
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taxicab metric
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Dt((x1,y1),(x2,y2))=|x1-x2|+|y1-y2|
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lemma 2
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a set W is open in (Y,Dy) iff there exists a set U which is open in (X,D) s.t. W=Y intersect U
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lemma 1
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if y is an element of Y and p>0 then NDy(y,p)=Y intersect ND(y,p)
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euclidean metric
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De((x1,y1),(x2,y2))= sq root ((x1-y1)^2+(x2-y2)^2)
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