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Caption: Mathematical Models by Arnold Emch - Series 3 (1925)
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MATHEMATICAL III SERIES1 MODELS Intersection of Quadrics A s is well k n o w n t w o quadrics in a general position intersect in a quartic C4 of the first kind, i.e., its projection C \ from a generic point u p o n a generic plane has two double points (apparent double points for the space-quartic), a n d is thus of genus 1. T o construct Fig. 1 JThe last number of series TI was 25. In this, as in prospective series, the models will|be numbered continuously, so that in any inquiry concerning these models it will suffice to state the corresponding number. [5]
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