m
Open access bot: doi added to citation with #oabot.
>David Eppstein (fix) |
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| title = Twenty-one algebraic normal forms of Citrabhānu | | title = Twenty-one algebraic normal forms of Citrabhānu | ||
| volume = 25 | | volume = 25 | ||
| year = 1998}}.</ref> | | year = 1998| doi-access = free | ||
}}.</ref> | |||
<math>\ x + y = a, x - y = b, xy = c, x^2 + y^2 = d, x^2 - y^2 = e, x^3 + y^3 = f, x^3 - y^3 = g</math> | <math>\ x + y = a, x - y = b, xy = c, x^2 + y^2 = d, x^2 - y^2 = e, x^3 + y^3 = f, x^3 - y^3 = g</math> | ||