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two distances [itex]d_1[/itex] and [itex]d_2[/itex] are said to beequivalentif for any two pairs (a,b) and (c,d)

[tex]d_1(a,b)=d_1(c,d) \Leftrightarrow d_2(a,b)=d_2(c,d)[/tex]

How can I (dis)prove that:

[tex]d_1(a,b)<d_1(c,d) \Rightarrow d_2(a,b)<d_2(c,d)[/tex]

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# Equivalent distances questions

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