Translation of "Mathematical" in Chinese

Einstein was a mathematical genius.

愛因斯坦是個數學天才。

He is a mathematical genius.

他是一個數學天才。

Takeo is engrossed in solving mathematical problems.

建夫专心致志地解决数学问题。

He is good at solving complicated mathematical problems.

他擅长解答数学难题。

A mathematical truth is neither simple nor complicated; it is.

数学真理既不简单，也不复杂，它存在着。