id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-3118	Mello, Cristiane de	The Group of Units of Integral Group Rings of Extra-Special 2-Groups	2017	12	.pdf	application/pdf	4936	274	87	Therefore u can be written as an integral invertible matrix U = [uij ] , 1 ≤ i, j ≤ 4, where u11 = 2(α1 + α2 + α4 + α8) + 1, u12 = 2(−α5 + α7 + α9 − α10), u13 = 2(−α3 + α6 + α11 − α14), u14 = 2(α12 − α13 − α15 + α16), u21 = 2(α5 + α7 + α9 + α10), u22 = 2(α1 + α2 − α4 − α8) + 1, u23 = 2(α12 + α13 − α15 − α16), u24 = 2(−α3 + α6 − α11 + α14), u31 = 2(α3 + α6 + α11 + α14), u32 = 2(α12 − α13 + α15 − α16), u33 = 2(α1 − α2 + α4 − α8) + 1, u34 = 2(−α5 + α7 − α9 + α10), u41 = 2(α12 + α13 + α15 + α16), u42 = 2(α3 + α6 − α11 − α14), u43 = 2(α5 + α7 − α9 − α10), u44 = 2(α1 − α2 − α4 + α8) + 1. = −α5 + α7 − α9 + α10, X41 = α12 + α13 + α15 + α16, X42 = α3 + α6 − α11 − α14, X43 = α5 + α7 − α9 − α10, X44 = α1 − α2 − α4 + α8.	cache/ejpam-3118.pdf	txt/ejpam-3118.txt