Mathematics desk
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February 2[edit]

Wulff net[edit]

What is the formula for calculating the y and x-intercepts for the latitudinal and meridonial curves for a Wulf net with radius 90? Plasmic Physics (talk) 05:46, 2 February 2013 (UTC)[reply]

Is my question chopped liver? Plasmic Physics (talk) 04:32, 5 February 2013 (UTC)[reply]

Definition and etiology of statistical/mathematical symbols[edit]

I teach Statistics and both frequent the statistical pages as well as send students to them for reference. More often than I would like, I encounter a symbol(s) with which I am unfamiliar, and/or have multiple meanings depending upon the equation or context. Is there a project to provide a simple definition and perhaps a brief history of statistical and mathematical symbols used in the equations and articles? Pw08096 (talk) 21:04, 2 February 2013 (UTC)pw08096[reply]

For definitions, see List of mathematical symbols. Duoduoduo (talk) 14:02, 3 February 2013 (UTC)[reply]

Thanks for the MATH list. That list is almost exclusively mathematical operators. As an example, the Greek symbol for sigma used in the list cited above is defined as a "selector". For a statistician, sigma is typically "standard deviation" and has an associated formula. This list would cause confusion for statisticians and others. Is there one for STATISTICAL terms and symbols? Pw08096 (talk) 22:46, 8 February 2013 (UTC)[reply]