← #28487108
Subgroups — #28487108
Order 15104.
370 conjugacy classes of subgroups.
The subgroup lattice has 328 nodes — too large to display as a diagram.
Conjugacy classes of subgroups
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|
| 1 | #21425057 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | #21425043 | C2 | 1 | 1 | yes | maximal, characteristic |
| 3 | #21424855 | C2 | 1 | 1 | yes | maximal, characteristic |
| 4 | #21423963 | C2 | 1 | 1 | yes | maximal, characteristic |
| 5 | C2×#16837150 | C2 | 1 | 1 | yes | maximal, characteristic |
| 6 | #21421980 | C2 | 1 | 1 | yes | maximal, characteristic |
| 7 | C59×#1277 | C2 | 1 | 1 | yes | maximal, characteristic |
| 8 | C2×#14273727 | C22 | 1 | 1 | yes | characteristic |
| 9 | C2×#14273661 | — | 2 | 1 | no | — |
| 10 | C2×C4⋊(C59⋊C8) | C22 | 1 | 1 | yes | characteristic |
| 11 | C2×#14273637 | — | 2 | 1 | no | — |
| 12 | #16837272 | C22 | 1 | 1 | yes | characteristic |
| 13 | C4×C4⋊Dic59 | C22 | 1 | 1 | yes | characteristic |
| 14 | #16837165 | — | 2 | 1 | no | — |
| 15 | #16837165 | — | 2 | 1 | no | — |
| 16 | #16837165 | — | 2 | 1 | no | — |
| 17 | #16837165 | — | 2 | 1 | no | — |
| 18 | #16837165 | — | 2 | 1 | no | — |
| 19 | #16837156 | — | 2 | 1 | no | — |
| 20 | #16837150 | C4 | 1 | 4 | yes | complemented |
| 21 | C2×C4⋊C8×C59 | C22 | 1 | 1 | yes | characteristic |
| 22 | C2×C4⋊C8×C59 | C22 | 1 | 1 | yes | characteristic |
| 23 | C2×C4×C8×C59 | C22 | 1 | 1 | yes | characteristic |
| 24 | C22×Dic118 | — | 2 | 1 | no | — |
| 25 | C22×C59⋊C8 | — | 2 | 1 | no | — |
| 26 | #14273727 | — | 2 | 1 | no | — |
| 27 | #14273727 | — | 2 | 1 | no | — |
| 28 | #14273727 | — | 2 | 1 | no | — |
| 29 | #14273727 | C2×C4 | 1 | 2 | yes | — |
| 30 | C2×C4⋊Dic59 | — | 2 | 1 | no | — |
| 31 | C2×C4⋊Dic59 | — | 2 | 1 | no | — |
| 32 | C2×C4⋊Dic59 | — | 2 | 1 | no | — |
| 33 | C2×C4⋊Dic59 | — | 2 | 1 | no | — |
| 34 | C2×C4⋊Dic59 | — | 2 | 1 | no | — |
| 35 | C2×C4⋊Dic59 | D4 | 1 | 1 | yes | characteristic |
| 36 | C2×C4⋊Dic59 | D4 | 1 | 1 | yes | characteristic |
| 37 | C2×C4×Dic59 | — | 2 | 1 | no | — |
| 38 | #14273661 | — | 4 | 2 | no | — |
| 39 | C4⋊(C59⋊C8) | — | 2 | 1 | no | — |
| 40 | C4⋊(C59⋊C8) | C2×C4 | 1 | 2 | yes | — |
| 41 | #14273637 | — | 4 | 2 | no | — |
| 42 | C59⋊#95 | — | 2 | 1 | no | — |
| 43 | C22×C8×C59 | — | 2 | 1 | no | — |
| 44 | C22×C8×C59 | — | 2 | 1 | no | — |
| 45 | C22×C8×C59 | D4 | 1 | 1 | yes | characteristic |
| 46 | C22×C8×C59 | D4 | 1 | 1 | yes | characteristic |
| 47 | C2×C42×C59 | C23 | 1 | 1 | yes | characteristic |
| 48 | C4⋊C8×C59 | — | 2 | 1 | no | — |
| 49 | C4⋊C8×C59 | — | 2 | 1 | no | — |
| 50 | C4⋊C8×C59 | — | 2 | 1 | no | — |
| 51 | C4⋊C8×C59 | C2×C4 | 1 | 2 | yes | — |
| 52 | C4×C8×C59 | — | 2 | 1 | no | — |
| 53 | C4×C8×C59 | — | 2 | 1 | no | — |
| 54 | C22×C4×C59 | C2×D4 | 1 | 1 | yes | characteristic |
| 55 | C22×C4×C59 | C2×D4 | 1 | 1 | yes | characteristic |
| 56 | C22×C4×C59 | #41 | 1 | 1 | yes | characteristic |
| 57 | C22×Dic59 | — | 2 | 1 | no | — |
| 58 | C22×Dic59 | — | 2 | 1 | no | — |
| 59 | C22×Dic59 | — | 4 | 1 | no | — |
| 60 | C22×Dic59 | — | 4 | 1 | no | — |
| 61 | C2×Dic118 | — | 2 | 2 | no | — |
| 62 | C2×Dic118 | — | 4 | 1 | no | — |
| 63 | C2×Dic118 | — | 8 | 1 | no | — |
| 64 | C2×Dic118 | — | 8 | 1 | no | — |
| 65 | C2×C8×C59 | — | 2 | 1 | no | — |
| 66 | C2×C8×C59 | — | 2 | 1 | no | — |
| 67 | C2×C8×C59 | — | 2 | 2 | no | — |
| 68 | C2×C8×C59 | — | 2 | 1 | no | — |
| 69 | C2×C8×C59 | — | 2 | 1 | no | — |
| 70 | C2×C8×C59 | — | 2 | 1 | no | — |
| 71 | C2×C8×C59 | — | 4 | 1 | no | — |
| 72 | C2×C8×C59 | — | 4 | 1 | no | — |
| 73 | C2×C8×C59 | — | 4 | 1 | no | — |
| 74 | C2×C8×C59 | — | 4 | 1 | no | — |
| 75 | C2×C8×C59 | — | 4 | 1 | no | — |
| 76 | C2×C8×C59 | Q16 | 1 | 2 | yes | — |
| 77 | C42×C59 | C22×C4 | 1 | 1 | yes | characteristic |
| 78 | C42×C59 | #41 | 1 | 1 | yes | characteristic |
| 79 | C42×C59 | #41 | 1 | 1 | yes | characteristic |
| 80 | C42×C59 | #41 | 1 | 1 | yes | characteristic |
| 81 | C4⋊Dic59 | — | 2 | 2 | no | — |
| 82 | C4⋊Dic59 | — | 2 | 2 | no | — |
| 83 | C4⋊Dic59 | — | 2 | 1 | no | — |
| 84 | C4⋊Dic59 | — | 2 | 1 | no | — |
| 85 | C4⋊Dic59 | — | 2 | 1 | no | — |
| 86 | C4⋊Dic59 | — | 2 | 1 | no | — |
| 87 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 88 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 89 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 90 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 91 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 92 | C4⋊Dic59 | — | 4 | 1 | no | — |
| 93 | C4⋊Dic59 | — | 8 | 1 | no | — |
| 94 | C4×Dic59 | — | 4 | 1 | no | — |
| 95 | C4×Dic59 | — | 4 | 1 | no | — |
| 96 | C2×C59⋊C8 | — | 2 | 2 | no | — |
| 97 | C2×C59⋊C8 | — | 4 | 1 | no | — |
| 98 | C2×C59⋊C8 | — | 4 | 1 | no | — |
| 99 | C23×C59 | #121 | 1 | 1 | yes | characteristic |
| 100 | C2×C4×C59 | — | 2 | 1 | no | — |
| 101 | C2×C4×C59 | — | 2 | 1 | no | — |
| 102 | C2×C4×C59 | #117 | 1 | 1 | yes | characteristic |
| 103 | C2×C4×C59 | C4×D4 | 1 | 1 | yes | characteristic |
| 104 | C2×C4×C59 | C4×D4 | 1 | 1 | yes | characteristic |
| 105 | C2×C4×C59 | #123 | 1 | 1 | yes | characteristic |
| 106 | C2×C4×C59 | #124 | 1 | 1 | yes | characteristic |
| 107 | C2×C4×C59 | #126 | 1 | 1 | yes | characteristic |
| 108 | C2×C4×C59 | C2×Q16 | 1 | 1 | yes | characteristic |
| 109 | C2×C4×C59 | #135 | 1 | 1 | yes | characteristic |
| 110 | C2×C4×C59 | AGL(1,ℤ/8) | 1 | 1 | yes | characteristic |
| 111 | C2×C4×C59 | AGL(1,ℤ/8) | 1 | 1 | yes | characteristic |
| 112 | C2×C4×C59 | #137 | 1 | 1 | yes | characteristic |
| 113 | C2×C4×C59 | #137 | 1 | 1 | yes | characteristic |
| 114 | C2×C4×C59 | #137 | 1 | 1 | yes | characteristic |
| 115 | C2×C4×C59 | #137 | 1 | 1 | yes | characteristic |
| 116 | C2×Dic59 | — | 4 | 2 | no | — |
| 117 | C2×Dic59 | — | 4 | 1 | no | — |
| 118 | C2×Dic59 | — | 4 | 1 | no | — |
| 119 | C2×Dic59 | — | 4 | 1 | no | — |
| 120 | C2×Dic59 | — | 4 | 1 | no | — |
| 121 | C2×Dic59 | — | 4 | 1 | no | — |
| 122 | C2×Dic59 | — | 4 | 1 | no | — |
| 123 | C2×Dic59 | — | 8 | 1 | no | — |
| 124 | C2×Dic59 | — | 8 | 1 | no | — |
| 125 | C2×Dic59 | — | 8 | 1 | no | — |
| 126 | C2×Dic59 | — | 8 | 1 | no | — |
| 127 | C2×Dic59 | — | 8 | 1 | no | — |
| 128 | Dic118 | — | 8 | 2 | no | — |
| 129 | Dic118 | — | 8 | 2 | no | — |
| 130 | C8×C59 | — | 2 | 2 | no | — |
| 131 | C8×C59 | — | 4 | 2 | no | — |
| 132 | C8×C59 | — | 4 | 1 | no | — |
| 133 | C8×C59 | — | 8 | 1 | no | — |
| 134 | C59⋊C8 | — | 4 | 2 | no | — |
| 135 | #9576 | — | 59 | 1 | no | maximal, Sylow |
| 136 | C22×C59 | #388 | 1 | 1 | yes | characteristic |
| 137 | C22×C59 | #462 | 1 | 1 | yes | characteristic |
| 138 | C22×C59 | #463 | 1 | 1 | yes | characteristic |
| 139 | C22×C59 | #468 | 1 | 1 | yes | characteristic |
| 140 | C22×C59 | #470 | 1 | 1 | yes | characteristic |
| 141 | C22×C59 | #471 | 1 | 1 | yes | characteristic |
| 142 | C22×C59 | #472 | 1 | 1 | yes | characteristic |
| 143 | C4×C59 | — | 2 | 1 | no | — |
| 144 | C4×C59 | — | 2 | 1 | no | — |
| 145 | C4×C59 | C4×Q16 | 1 | 1 | yes | characteristic |
| 146 | C4×C59 | #440 | 1 | 1 | yes | characteristic |
| 147 | C4×C59 | #440 | 1 | 1 | yes | characteristic |
| 148 | C4×C59 | #441 | 1 | 1 | yes | characteristic |
| 149 | C4×C59 | #484 | 1 | 1 | yes | characteristic |
| 150 | C4×C59 | #485 | 1 | 1 | yes | characteristic |
| 151 | C4×C59 | #489 | 1 | 1 | yes | characteristic |
| 152 | C4×C59 | #491 | 1 | 1 | yes | characteristic |
| 153 | Dic59 | — | 8 | 2 | no | — |
| 154 | Dic59 | — | 8 | 1 | no | — |
| 155 | Dic59 | — | 8 | 1 | no | — |
| 156 | Dic59 | — | 16 | 1 | no | — |
| 157 | #1990 | — | 59 | 1 | no | — |
| 158 | #1987 | — | 59 | 1 | no | — |
| 159 | #1947 | — | 59 | 1 | no | — |
| 160 | #1770 | — | 59 | 1 | no | — |
| 161 | C2×#333 | — | 59 | 1 | no | — |
| 162 | #1296 | — | 59 | 1 | no | — |
| 163 | #1277 | D59 | 1 | 1 | yes | characteristic |
| 164 | C2×C59 | #1692 | 1 | 1 | yes | characteristic |
| 165 | C2×C59 | #1696 | 1 | 1 | yes | characteristic |
| 166 | C2×C59 | #1697 | 1 | 1 | yes | characteristic |
| 167 | C2×C59 | #1703 | 1 | 1 | yes | characteristic |
| 168 | C2×C59 | #1928 | 1 | 1 | yes | characteristic |
| 169 | C2×C59 | #1931 | 1 | 1 | yes | characteristic |
| 170 | C2×C59 | #1935 | 1 | 1 | yes | characteristic |
| 171 | C2×C4⋊Q8 | — | 59 | 1 | no | — |
| 172 | C2×#107 | — | 118 | 1 | no | — |
| 173 | C2×C4⋊C8 | — | 59 | 1 | no | — |
| 174 | C2×C4⋊C8 | C2×D59 | 1 | 1 | yes | characteristic |
| 175 | C2×C4⋊C8 | C2×D59 | 1 | 1 | yes | characteristic |
| 176 | C2×#97 | — | 118 | 1 | no | — |
| 177 | C2×C4×C8 | C2×D59 | 1 | 1 | yes | characteristic |
| 178 | #384 | — | 59 | 1 | no | — |
| 179 | C4×C4⋊C4 | — | 59 | 1 | no | — |
| 180 | #340 | — | 118 | 1 | no | — |
| 181 | #340 | — | 118 | 1 | no | — |
| 182 | #340 | — | 118 | 1 | no | — |
| 183 | #340 | — | 118 | 1 | no | — |
| 184 | #340 | — | 118 | 1 | no | — |
| 185 | #336 | — | 118 | 1 | no | — |
| 186 | #333 | — | 59 | 4 | no | — |
| 187 | C59 | #9576 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 188 | C22×Q8 | — | 118 | 1 | no | — |
| 189 | C22×C8 | — | 2 | 1 | no | — |
| 190 | C22×C8 | — | 2 | 1 | no | — |
| 191 | C22×C8 | — | 118 | 1 | no | — |
| 192 | C22×C8 | D236 | 1 | 1 | yes | characteristic |
| 193 | C22×C8 | D236 | 1 | 1 | yes | characteristic |
| 194 | C4⋊Q8 | — | 59 | 2 | no | — |
| 195 | C4⋊Q8 | — | 118 | 1 | no | — |
| 196 | C4⋊Q8 | — | 118 | 1 | no | — |
| 197 | C4⋊Q8 | — | 118 | 1 | no | — |
| 198 | C2×C4⋊C4 | — | 59 | 1 | no | — |
| 199 | C2×C4⋊C4 | — | 59 | 1 | no | — |
| 200 | C2×C4⋊C4 | — | 118 | 1 | no | — |
| 201 | C2×C4⋊C4 | — | 118 | 1 | no | — |
| 202 | C2×C4⋊C4 | — | 118 | 1 | no | — |
| 203 | C2×C4⋊C4 | — | 118 | 1 | no | — |
| 204 | C2×C4⋊C4 | — | 118 | 1 | no | — |
| 205 | C2×C42 | — | 118 | 1 | no | — |
| 206 | C2×C42 | C22×D59 | 1 | 1 | yes | characteristic |
| 207 | #107 | — | 236 | 2 | no | — |
| 208 | C4⋊C8 | — | 2 | 1 | no | — |
| 209 | C4⋊C8 | — | 2 | 1 | no | — |
| 210 | C4⋊C8 | — | 2 | 1 | no | — |
| 211 | C4⋊C8 | — | 59 | 2 | no | — |
| 212 | C4⋊C8 | — | 118 | 1 | no | — |
| 213 | C4⋊C8 | C4×D59 | 1 | 2 | yes | — |
| 214 | #97 | — | 236 | 2 | no | — |
| 215 | C4×C8 | — | 2 | 1 | no | — |
| 216 | C4×C8 | — | 2 | 1 | no | — |
| 217 | #95 | — | 118 | 1 | no | — |
| 218 | C2×Q8 | — | 118 | 2 | no | — |
| 219 | C2×Q8 | — | 472 | 1 | no | — |
| 220 | C2×Q8 | — | 472 | 1 | no | — |
| 221 | C2×Q8 | — | 236 | 1 | no | — |
| 222 | C22×C4 | — | 118 | 1 | no | — |
| 223 | C22×C4 | — | 118 | 1 | no | — |
| 224 | C22×C4 | — | 236 | 1 | no | — |
| 225 | C22×C4 | — | 236 | 1 | no | — |
| 226 | C22×C4 | C2×D236 | 1 | 1 | yes | characteristic |
| 227 | C22×C4 | D4×D59 | 1 | 1 | yes | characteristic |
| 228 | C22×C4 | #11745689 | 1 | 1 | yes | characteristic |
| 229 | C2×C8 | — | 2 | 1 | no | — |
| 230 | C2×C8 | — | 2 | 1 | no | — |
| 231 | C2×C8 | — | 2 | 2 | no | — |
| 232 | C2×C8 | — | 2 | 1 | no | — |
| 233 | C2×C8 | — | 2 | 1 | no | — |
| 234 | C2×C8 | — | 2 | 1 | no | — |
| 235 | C2×C8 | — | 4 | 1 | no | — |
| 236 | C2×C8 | — | 4 | 1 | no | — |
| 237 | C2×C8 | — | 4 | 1 | no | — |
| 238 | C2×C8 | — | 4 | 1 | no | — |
| 239 | C2×C8 | — | 4 | 1 | no | — |
| 240 | C2×C8 | — | 118 | 2 | no | — |
| 241 | C2×C8 | — | 236 | 1 | no | — |
| 242 | C2×C8 | — | 236 | 1 | no | — |
| 243 | C2×C8 | Dic236 | 1 | 2 | yes | — |
| 244 | C4⋊C4 | — | 118 | 2 | no | — |
| 245 | C4⋊C4 | — | 118 | 2 | no | — |
| 246 | C4⋊C4 | — | 118 | 1 | no | — |
| 247 | C4⋊C4 | — | 118 | 1 | no | — |
| 248 | C4⋊C4 | — | 118 | 1 | no | — |
| 249 | C4⋊C4 | — | 118 | 1 | no | — |
| 250 | C4⋊C4 | — | 472 | 1 | no | — |
| 251 | C4⋊C4 | — | 236 | 1 | no | — |
| 252 | C4⋊C4 | — | 236 | 1 | no | — |
| 253 | C4⋊C4 | — | 236 | 1 | no | — |
| 254 | C4⋊C4 | — | 236 | 1 | no | — |
| 255 | C4⋊C4 | — | 236 | 1 | no | — |
| 256 | C4⋊C4 | — | 236 | 1 | no | — |
| 257 | C42 | — | 236 | 1 | no | — |
| 258 | C42 | — | 236 | 1 | no | — |
| 259 | C42 | C2×C4×D59 | 1 | 1 | yes | characteristic |
| 260 | C42 | #11745685 | 1 | 1 | yes | characteristic |
| 261 | C42 | #11745687 | 1 | 1 | yes | characteristic |
| 262 | C42 | #11745687 | 1 | 1 | yes | characteristic |
| 263 | C23 | #14273702 | 1 | 1 | yes | characteristic |
| 264 | Q8 | — | 472 | 2 | no | — |
| 265 | Q8 | — | 472 | 2 | no | — |
| 266 | C2×C4 | — | 2 | 1 | no | — |
| 267 | C2×C4 | — | 2 | 1 | no | — |
| 268 | C2×C4 | — | 472 | 1 | no | — |
| 269 | C2×C4 | — | 472 | 1 | no | — |
| 270 | C2×C4 | — | 472 | 1 | no | — |
| 271 | C2×C4 | — | 472 | 1 | no | — |
| 272 | C2×C4 | — | 472 | 1 | no | — |
| 273 | C2×C4 | — | 236 | 1 | no | — |
| 274 | C2×C4 | — | 236 | 1 | no | — |
| 275 | C2×C4 | — | 236 | 1 | no | — |
| 276 | C2×C4 | — | 236 | 1 | no | — |
| 277 | C2×C4 | — | 236 | 2 | no | — |
| 278 | C2×C4 | — | 236 | 1 | no | — |
| 279 | C2×C4 | — | 236 | 1 | no | — |
| 280 | C2×C4 | #14273685 | 1 | 1 | yes | characteristic |
| 281 | C2×C4 | (C22⋊D59)⋊C4 | 1 | 1 | yes | characteristic |
| 282 | C2×C4 | C4×D236 | 1 | 1 | yes | characteristic |
| 283 | C2×C4 | #14273711 | 1 | 1 | yes | characteristic |
| 284 | C2×C4 | #14273713 | 1 | 1 | yes | characteristic |
| 285 | C2×C4 | #14273722 | 1 | 1 | yes | characteristic |
| 286 | C2×C4 | C2×Dic236 | 1 | 1 | yes | characteristic |
| 287 | C2×C4 | #14273749 | 1 | 1 | yes | characteristic |
| 288 | C2×C4 | #14273751 | 1 | 1 | yes | characteristic |
| 289 | C2×C4 | #14273755 | 1 | 1 | yes | characteristic |
| 290 | C2×C4 | #14273756 | 1 | 1 | yes | characteristic |
| 291 | C2×C4 | #14273756 | 1 | 1 | yes | characteristic |
| 292 | C2×C4 | #14273759 | 1 | 1 | yes | characteristic |
| 293 | C2×C4 | #14273760 | 1 | 1 | yes | characteristic |
| 294 | C8 | — | 2 | 2 | no | — |
| 295 | C8 | — | 4 | 1 | no | — |
| 296 | C8 | — | 4 | 2 | no | — |
| 297 | C8 | — | 8 | 1 | no | — |
| 298 | C8 | — | 236 | 2 | no | — |
| 299 | C22 | #16837294 | 1 | 1 | yes | characteristic |
| 300 | C22 | #16837613 | 1 | 1 | yes | characteristic |
| 301 | C22 | #16837618 | 1 | 1 | yes | characteristic |
| 302 | C22 | #16837649 | 1 | 1 | yes | characteristic |
| 303 | C22 | #16837661 | 1 | 1 | yes | characteristic |
| 304 | C22 | #16837666 | 1 | 1 | yes | characteristic |
| 305 | C22 | #16837673 | 1 | 1 | yes | characteristic |
| 306 | C4 | — | 2 | 1 | no | — |
| 307 | C4 | — | 2 | 1 | no | — |
| 308 | C4 | — | 944 | 1 | no | — |
| 309 | C4 | — | 472 | 1 | no | — |
| 310 | C4 | — | 472 | 1 | no | — |
| 311 | C4 | — | 472 | 2 | no | — |
| 312 | C4 | C4×Dic236 | 1 | 1 | yes | characteristic |
| 313 | C4 | #16837499 | 1 | 1 | yes | characteristic |
| 314 | C4 | #16837504 | 1 | 1 | yes | characteristic |
| 315 | C4 | #16837506 | 1 | 1 | yes | characteristic |
| 316 | C4 | #16837738 | 1 | 1 | yes | characteristic |
| 317 | C4 | #16837744 | 1 | 1 | yes | characteristic |
| 318 | C4 | #16837760 | 1 | 1 | yes | characteristic |
| 319 | C4 | #16837769 | 1 | 1 | yes | characteristic |
| 320 | C2 | #21423603 | 1 | 1 | yes | characteristic |
| 321 | C2 | #21423625 | 1 | 1 | yes | characteristic |
| 322 | C2 | #21423630 | 1 | 1 | yes | characteristic |
| 323 | C2 | #21423672 | 1 | 1 | yes | characteristic |
| 324 | C2 | #21424738 | 1 | 1 | yes | characteristic |
| 325 | C2 | #21424759 | 1 | 1 | yes | characteristic |
| 326 | C2 | #21424787 | 1 | 1 | yes | characteristic |
Complements
Splittings G = N ⋊ H with N normal; H ≅ G/N.
Maximal subgroups
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
Finite Group Databasebeta