The existence of a tensor product is proved in the left quasi-normalband category, and the relationship with the tensor product in the semi-group category is provided.
A rubber band can be elongated to several times of its normal length.
橡皮带能拉长到平常长度的几倍。
3
A process which is coupled to the narrow band of brain temperature could allow all normal human brains to be affected by a subharmonic whose frequency range at about 10 Hz would only vary by 0. 1 Hz.