| σ-finite measure | GKPQ7M6KK0 | definition | open | Wikidata Q291430, ProofWiki Definition:Sigma-Finite_Measure |
| Τ | 3XV70YKG9R | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q14415, MathWorld Tau, ProofWiki Symbols:Greek/Tau |
| Υ | B10PYV05KF | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q14423, ProofWiki Symbols:Greek/Upsilon |
| Φ/φ | PZTXGJC3WV | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q10029, ProofWiki Symbols:Greek/Phi |
| Χ/χ | 6AARDKE71C | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q14425, ProofWiki Symbols:Greek/Chi |
| Ψ | Q8HHZ1H1CS | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q14432, ProofWiki Symbols:Greek/Psi |
| ω-meson | MYSKG2JEW4 | unknown | open | Wikidata Q424134, nLab ω-meson |
| Ω/ω | HF27RW7GWZ | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q9890, ProofWiki Symbols:Greek/Omega |
| א | 11NQ7KFE1C | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q16725860, ProofWiki Symbols:Hebrew/Aleph |
| ב | B49KZFKF6H | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q15049, ProofWiki Symbols:Hebrew/Beth |
| ג | 33ARVBANRF | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q15074, ProofWiki Symbols:Hebrew/Gimel |
| ד | 1ZM8594MSC | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q15080, ProofWiki Symbols:Hebrew/Daleth |
| “Surely You're Joking, Mr. Feynman!” | 3WY5AX4ZRK | unknown | out_of_scope (a book, not an item of mathematics) | Wikidata Q2743592, ProofWiki Book:Richard_P._Feynman/Surely_You're_Joking,_Mr._Feynman! |
| “What Do You Care What Other People Think?” | WW9BXQJ5SZ | unknown | out_of_scope (a book, not an item of mathematics) | Wikidata Q2712899, ProofWiki Book:Richard_P._Feynman/What_Do_You_Care_What_Other_People_Think? |
| † | 84YJYQF78M | unknown | open | Wikidata Q282364, MathWorld Dagger |
| ‡ | NGSKNHVBX6 | unknown | open | Wikidata Q87523318, MathWorld DoubleDagger |
| ∇ | DC8288HDD6 | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q937750, ProofWiki Symbols:Nabla |
| ∈ | TNQGPT1KZW | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q2221333, ProofWiki Symbols:Set_Theory/Element |
| −1 | 804KHENA47 | statement | open | Wikidata Q310395, ProofWiki -1 |
| ∓ | W1G8VVWP6G | unknown | open | Wikidata Q87524447, MathWorld MinusorPlus |
| ∪ | 2B793CRWHR | unknown | open | Wikidata Q87524502, MathWorld Cup |
| ◊ | FBN208Z7W3 | unknown | open | Wikidata Q13127755, MathWorld Lozenge |
| 𝑛-tuple | JY0E67FB59 | unknown | open | Wikidata Q600590, MathWorld n-Tuple |
| 𝑝-group | 1WB316ECB3 | definition | node (a node has the same Wikidata item as the row) | Wikidata Q286972, EoM P-group, MathWorld p-Group, ProofWiki Definition:P-Group |