A. Horwitz

activity

19982026

most citedA Version of Simpson's Rule for Multiple Integrals

28 citations · 41 across the 24 of their papers we have counts for

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Showing 2017Show all

2 papers · 1 filter

math.HO2017

The foci and rotation angle of an ellipse, $E_{0}$ , as a function of the coefficients of an equation of $E_{0}$

Alan Horwitz

First, we give a formula for the foci of an ellipse, $E_{0}$ , as a function of the coefficients of an equation of $E_{0}$ (see Theorem <ref>T2</ref>). To prove Theorem <ref>T2</ref>, we…

math.HO2017

When is an ellipse inscribed in a quadrilateral tangent at the midpoint of two or more sides ?

Alan Horwitz

In "Quartic Coincidences and the Singular Value Decomposition" by Clifford and Lachance, Mathematics Magazine, December, 2013, it was shown that if there is a midpoint ellipse(an e…

The foci and rotation angle of an ellipse, E0​, as a function of the coefficients of an equation of E0​

When is an ellipse inscribed in a quadrilateral tangent at the midpoint of two or more sides ?

The foci and rotation angle of an ellipse, $E_{0}$ , as a function of the coefficients of an equation of $E_{0}$