Last Updated:2022/12/24

I take account of conical and biplanar nodes, or, as I call them, cnicnodes, and binodes; of pinch-points on the nodal curve; and of close-points and off-points on the cuspidal curve: viz. I assume that there are C, cnicnodes, B, binodes, j, pinch-points, 𝜒, close points, 𝜃, off-points, deferring for the present the explanation of these singularities. The same letters, accented, refer to the reciprocal singularities. Or using trope as the reciprocal term to node, these will be C', cnictropes, B', bitropes, j', pinch-planes, 𝜒', close-planes, 𝜃', off-planes; but these present themselves, not in the equations above referred to, but in the reciprocal equations.

音声機能が動作しない場合はこちらをご確認ください
Edit Histories(0)

Sentence quizzes to help you learn to read

Edit Histories(0)

Login / Sign up

 

Download the app!
DiQt

DiQt

Free

★★★★★★★★★★