UF Sparse Matrix Collection: JGD_Trefethen group.

matrix	graph	Group/Name	id	download	# rows	# cols	nonzeros	type	sym	spd?
		JGD_Trefethen/Trefethen_150	2205	MAT, MM, RB	150	150	2,040	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_20	2204	MAT, MM, RB	20	20	158	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_200	2207	MAT, MM, RB	200	200	2,890	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_2000	2211	MAT, MM, RB	2,000	2,000	41,906	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_20000	2213	MAT, MM, RB	20,000	20,000	554,466	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_20000b	2212	MAT, MM, RB	19,999	19,999	554,435	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_200b	2206	MAT, MM, RB	199	199	2,873	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_20b	2203	MAT, MM, RB	19	19	147	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_300	2208	MAT, MM, RB	300	300	4,678	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_500	2209	MAT, MM, RB	500	500	8,478	integer symmetric	yes	yes
		JGD_Trefethen/Trefethen_700	2210	MAT, MM, RB	700	700	12,654	integer symmetric	yes	yes

Maintained by Tim Davis, last updated 10-Jun-2015.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
See UFget to download directly into MATLAB.