id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cana-4515	Iqbal M. Batiha	Complexity of Types of Trapezoidal Graphs	2025	12	.pdf	application/pdf	6421	373	85	⋯ −1 4 −1 | | | (2𝑘+4)∗(2𝑘+4) | | | −1 4 −1 0 ⋯ 0 −1 −1 0 ⋱ −1 0 ⋯ 0 −1 −1 0 ⋯ 0 −1 4 | | | (2𝑘+4)∗(2𝑘+4) | | | | | | in which 1 𝑆 = 1 | | | 4 −1 0 ⋯ 0 −1 −1 0	cache/cana-4515.pdf	txt/cana-4515.txt