Cremona's table of elliptic curves

90 = 2 · 3² · 5

Class	r	Atkin-Lehner	Eigenvalues
90a (4 curves)	0	2+ 3+ 5-	2+ 3+ 5-  2  6 -4 -6 -4
Curve Equation t 90a1 [1,-1,0,6,0] 6 90a2 [1,-1,0,-24,18] 6 90a3 [1,-1,0,-69,-235] 2 90a4 [1,-1,0,-1149,-14707] 2
90b (4 curves)	0	2- 3+ 5+	2- 3+ 5+  2 -6 -4  6 -4
Curve Equation t 90b1 [1,-1,1,-8,11] 6 90b2 [1,-1,1,-128,587] 6 90b3 [1,-1,1,52,-53] 2 90b4 [1,-1,1,-218,-269] 2
90c (8 curves)	0	2- 3- 5-	2- 3- 5- -4  0  2 -6 -4
Curve Equation t 90c1 [1,-1,1,13,-61] 4 90c2 [1,-1,1,-167,-709] 4 90c3 [1,-1,1,-122,1721] 12 90c4 [1,-1,1,-2597,-50281] 2 90c5 [1,-1,1,-617,5231] 2 90c6 [1,-1,1,-3002,63929] 12 90c7 [1,-1,1,-4082,14681] 6 90c8 [1,-1,1,-48002,4059929] 6

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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