hi i am just reading some notes on tesor analysis and in the notes itself while representing vectors in terms of basis using einstein summation notation the author switches between subsripts and superscripts at times. are there any different in these notation. if so what are they and when should they be used?(adsbygoogle = window.adsbygoogle || []).push({});

An examples is given on the pdf in section 1.3.

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# EINSTEIN Summation notation

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