Erayga "Lobachevsky" caadi ahaan waxa loola jeedaa Nikolai Ivanovich Lobachevsky, xisaabyahan Ruush ah oo loo aqoonsaday inuu sameeyay joomatari aan Euclidean ahayn. Erayada qaamuuska ah, "Lobachevsky" waxa lagu qeexi doonaa sida:Lobachevsky (magac): Nikolai Ivanovich Lobachevsky (1792-1856), xisaabyahan Ruush ah oo caan ku ahaa wax-ka-qabashada horumarinta joomatari aan Euclidean ahayn.