Projective Planes of Order 49 Related to t74

I am currently compiling a list of known projective planes of order 49. As part of this enumeration, here are listed the plane t74 and all known planes of order 49 obtained from it by dualizing and deriving. Coming soon: also planes related by the method of lifting quotients. This list is currently incomplete; check back later for a complete enumeration.

Following the table is a key to the table.

Known Projective Planes of Order 49 Related to t74

Entry	Plane	\|Autgp\|	Point Orbits	Line Orbits	7-rank
1	Translation Plane t74, dual dt74	57624	1²,2⁶,4⁹,2401	1,49²,98⁶,196⁹	941
2	t74_0_0, dt74_0_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
3	t74_0_1, dt74_0_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
4	t74_0_2, dt74_0_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
5	t74_0_3, dt74_0_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
6	t74_0_4, dt74_0_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
7	t74_0_5, dt74_0_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
8	t74_0_6, dt74_0_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
9	t74_0_7, dt74_0_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
10	t74_1_0, dt74_1_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
11	t74_1_1, dt74_1_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
12	t74_1_2, dt74_1_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
13	t74_1_3, dt74_1_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
14	t74_1_4, dt74_1_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
15	t74_1_5, dt74_1_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
16	t74_1_6, dt74_1_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
17	t74_1_7, dt74_1_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
18	t74_2_0, dt74_2_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
19	t74_2_1, dt74_2_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
20	t74_2_2, dt74_2_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
21	t74_2_3, dt74_2_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
22	t74_2_4, dt74_2_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
23	t74_2_5, dt74_2_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
24	t74_2_6, dt74_2_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
25	t74_2_7, dt74_2_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
26	t74_3_0, dt74_3_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
27	t74_3_1, dt74_3_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
28	t74_3_2, dt74_3_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
29	t74_3_3, dt74_3_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
30	t74_3_4, dt74_3_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
31	t74_3_5, dt74_3_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
32	t74_3_6, dt74_3_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
33	t74_3_7, dt74_3_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
34	t74_4_0, dt74_4_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
35	t74_4_1, dt74_4_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
36	t74_4_2, dt74_4_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
37	t74_4_3, dt74_4_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
38	t74_4_4, dt74_4_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
39	t74_4_5, dt74_4_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
40	t74_4_6, dt74_4_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
41	t74_4_7, dt74_4_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
42	t74_5_0, dt74_5_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
43	t74_5_1, dt74_5_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
44	t74_5_2, dt74_5_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
45	t74_5_3, dt74_5_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
46	t74_5_4, dt74_5_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
47	t74_5_5, dt74_5_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
48	t74_5_6, dt74_5_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
49	t74_5_7, dt74_5_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
50	t74_6_0, dt74_6_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
51	t74_6_1, dt74_6_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
52	t74_6_2, dt74_6_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
53	t74_6_3, dt74_6_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
54	t74_6_4, dt74_6_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
55	t74_6_5, dt74_6_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
56	t74_6_6, dt74_6_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
57	t74_6_7, dt74_6_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
58	t74_7_0, dt74_7_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
59	t74_7_1, dt74_7_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
60	t74_7_2, dt74_7_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
61	t74_7_3, dt74_7_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
62	t74_7_4, dt74_7_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
63	t74_7_5, dt74_7_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
64	t74_7_6, dt74_7_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
65	t74_7_7, dt74_7_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
66	t74_8_0, dt74_8_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
67	t74_8_1, dt74_8_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
68	t74_8_2, dt74_8_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
69	t74_8_3, dt74_8_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
70	t74_8_4, dt74_8_4	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
71	t74_8_5, dt74_8_5	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
72	t74_8_6, dt74_8_6	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
73	t74_8_7, dt74_8_7	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
74	t74_9_0, dt74_9_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
75	t74_9_1, dt74_9_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
76	t74_9_2, dt74_9_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
77	t74_9_3, dt74_9_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
78	t74_10_0, dt74_10_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
79	t74_10_1, dt74_10_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
80	t74_10_2, dt74_10_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
81	t74_10_3, dt74_10_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
82	t74_11_0, dt74_11_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
83	t74_11_1, dt74_11_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
84	t74_11_2, dt74_11_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
85	t74_11_3, dt74_11_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
86	t74_12_0, dt74_12_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
87	t74_12_1, dt74_12_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
88	t74_12_2, dt74_12_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
89	t74_12_3, dt74_12_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
90	t74_13_0, dt74_13_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
91	t74_13_1, dt74_13_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
92	t74_13_2, dt74_13_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
93	t74_13_3, dt74_13_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
94	t74_14_0, dt74_14_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
95	t74_14_1, dt74_14_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
96	t74_14_2, dt74_14_2	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
97	t74_14_3, dt74_14_3	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
98	t74_15_0, dt74_15_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
99	t74_15_1, dt74_15_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
100	t74_16_0, dt74_16_0	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987
101	t74_16_1, dt74_16_1	2058	1,7⁵⁶,2058	1⁸,42,49⁴⁹	987

Key to the table

Only one line is displayed for both a plane and its dual, an asterisk (*) in the first column indicating that the plane is self-dual. Each line includes the following information and isomorphism invariants for each plane.

Plane provides a pzip file containing the projective plane. I assume you have installed pzip under linux, which compresses each plane to about 6 KB. Right-click to save as plane.pz, then type the command punzip plane.pz to recover plane as a text file. This text file has 2451 rows, each row specifying a line of the plane as a subset of the points 0,1,2,...,2450. For non-self-dual planes, a second file is also given, containing the dual of the first.
|Autgp| The order of the full collineation group of the projective plane. This table entry is linked to a gzip file providing generators of the automorphism group. Right-click to save as plane.gz, then type the command gunzip plane.gz to recover plane as a text file. This text file lists generators of the full collineation group as permutations of the integers 0,1,2,...,4901 where 0,1,2,...,2450 are labels for the points and 2451,...,4901 are labels for the lines. Generators for the automorphism group of the dual plane are not provided since these are trivially obtained from the generators given for the original plane.
Point Orbits The lengths of the full automorphism group on the points. (These are the lengths of the line orbits for the dual plane.)
Line Orbits The lengths of the full automorphism group on the lines. (These are the lengths of the point orbits for the dual plane.)
7-rank The rank of the (0,1)-incidence matrix of the projective plane, over a field of characteristic 7.

/ revised February, 2011