Check the following MathML expressions that have validation problems

[physikerwelt]

• [x] 3
• [x] 12
• [x] 19
• [x] 21
• [x] 23
• [ ] 24
• [x] 28
• [x] 39
• [x] 41
• [x] 42
• [x] 46
• [ ] 49
• [ ] 52
• [x] 53
• [x] 59
• [x] 60
• [x] 65
• [x] 72
• [x] 74
• [x] 84
• [x] 89
• [x] 90
• [x] 92
• [x] 94
• [x] 97
• [x] 98
• [x] 104
• [x] 105
• [x] 106
• [ ] 107
• [x] 119
• [x] 126
• [x] 127
• [x] 130
• [x] 134
• [x] 141
• [x] 142
• [x] 148
• [x] 152
• [x] 154
• [x] 156
• [x] 157
• [x] 160
• [x] 162
• [x] 163
• [x] 164
• [x] 166
• [x] 167
• [x] 170
• [x] 171
• [x] 172
• [x] 173
• [x] 174
• [x] 175
• [x] 176
• [x] 179
• [x] 180
• [x] 181
• [x] 182
• [x] 183
• [x] 184
• [x] 186
• [x] 187
• [x] 188
• [x] 189
• [x] 190
• [x] 192
• [x] 193
• [ ] 194
• [x] 195
• [x] 198
• [x] 199
• [x] 200
• [ ] 202
• [x] 204
• [x] 209
• [x] 211
• [x] 218
• [ ] 221
• [x] 222
• [x] 241
• [x] 247
• [x] 248
• [x] 252
• [x] 255
• [x] 260
• [x] 262
• [x] 263
• [x] 266
• [x] 267
• [x] 270
• [x] 281
• [x] 286
• [ ] 292
• [x] 293
• [x] 294
• [x] 296
• [x] 298
• [x] 302
• [x] 303
• [x] 304

[physikerwelt]

many were fixed in d3c9b1fc1f6a38864c78ccd4e0cf80f2a84912ea