望遠 ぼうえん きょう級数 きゅうすうじゃありません
bōenkyōkyū sūja arimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 望遠鏡級数

1. It is not a telescopic series.; It's not a telescope-class series.

Negative
Polite
Terminal Form
Mathematics