Sulbasutrisma: Difference between revisions
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'''332929/332928''', the '''Sulbasutrisma''', is a 2.3.17.577 subgroup ratio which is the difference between 577/408 and its octave complement 816/577. It is also the difference between [[ | '''332929/332928''', the '''Sulbasutrisma''', is a 2.3.17.577 subgroup ratio which is the difference between 577/408 and its octave complement 816/577. It is also the difference between a stack of twice [[577/576]] and [[289/288]]. As 577/408 is a convergent to sqrt(2), like [[3/2]], [[7/5]], [[17/12]], [[41/29]], [[99/70]], and 239/169, the comma separating the two is [[superparticular]]. | ||
== Etymology == | == Etymology == | ||
This comma was named by Cole in 2024 after the ''Sulba Sutra'', a classical Indian mathematical text from the third or fourth century BC<ref>https://en.wikipedia.org/wiki/Pell_number#cite_ref-3</ref> that first mentioned this accurate approximation to the square root of two. | This comma was named by Cole in 2024 after the ''Sulba Sutra'', a classical Indian mathematical text from the third or fourth century BC<ref>https://en.wikipedia.org/wiki/Pell_number#cite_ref-3</ref> that first mentioned this accurate approximation to the square root of two. | ||