id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-2554	Cocchetti, Giuseppe; Rizzi, Egidio	Analytical and numerical analysis on the collapse modes of least-thickness circular masonry arches at decreasing friction	2019	20	.pdf	application/pdf	11919	523	57	[2 sin 2( )] 0           + + − − − + + − + = (14) 2(2 sin 2 ) 2cos2 2 sin 2 0      + − + − = (15) the latter equation leading to following symbolic solution  = ±( ): 2cos2 1 4 ( ) 2 sin 2         (1), for CCR = 0, M = 0, and can be classically represented as: ( )( ) ( ) 2 2 2 cos sin cos sin cot cot 2 2 cos sin cos sin cos sin 1 cos 2 1 cos cot H H A h h      	cache/fis-2554.pdf	txt/fis-2554.txt