Reference counting
FC서울 떠난 린가드, 브라질 명문 코린치앙스서 새 출발。新收录的资料对此有专业解读
Sponsored by: Molex。新收录的资料是该领域的重要参考
The key difference from Euclidean geometry is that a circle of radius \(r\) has circumference \(2\pi\sinh r 2\pi r\), and volumes grow exponentially rather than polynomially: \[\operatorname{Vol}(B(r)) = \operatorname{Vol}(S^{n-1})\int_0^r \sinh^{n-1}(t)\,dt.\]，详情可参考PDF资料