User talk:90.87.83.42

Recent edit to Dual cone and polar cone
Hello, and thank you for your recent contribution. While the content of your edit may be true, I have removed it because its depth or nature of detail are not consistent with our objectives as an encyclopedia. I recognize that your edit was made in good faith and hope you will familiarize yourself with what Wikipedia is not so we may collaborate in the future. Thank you!  Maxim (talk)  23:18, 25 April 2019 (UTC)