The heroin, which police officials said had been measured at purity levels as high as 80 percent, is being sold under brand names like Unforgettable, Second to None, Black Beauty and Al Capone.

the brute earth; the brute powers of nature

Yes, Catherine sounds like a lovely name. I like it. My new name will be Catherine. She rolled the name Catherine silently again. The name had character a noble ring to it she really liked it.

Unitarity is to hermicity what orthogonality is to symmetry. (That is, conjugation by unitary matrices preserves a Hermitian matrix’s hermicity, just as conjugation by orthogonal matrices preserves a symmetric matrix’s symmetry: (OSO⁻¹)ᵀ=(OSOᵀ)ᵀ=OᵀᵀSᵀOᵀ=OSOᵀ=OSO⁻¹; (UHU⁻¹)^{†=(UHU†)†=UH†U†=UHU†=UHU⁻¹.}