| List of topology topics | Y71V0ZW9Y1 | topic | open | Wikipedia Lists of mathematics topics#KB4P |
| List of transforms | GY4PJ2MY3F | topic | open | Wikipedia Lists of mathematics topics#J6IV, Wikipedia List of Fourier analysis topics#YX2Y |
| List of transforms | SNXN10K0Z0 | topic | open | Wikipedia List of transforms, Wikidata Q6585617 |
| List of transitive finite linear groups | VM4F8GDPEJ | topic | open | Wikipedia List of transitive finite linear groups, Wikidata Q6643944 |
| List of triangle inequalities | B4MHFE435B | topic | open | Wikipedia List of triangle topics#OSJO |
| List of triangle inequalities | PCBAKZBZFE | topic | open | Wikipedia List of triangle inequalities, Wikidata Q18206252 |
| List of triangle topics | S91A1J8HH0 | topic | open | Wikipedia List of triangle topics, Wikidata Q4117062 |
| List of trigonometric identities | DHAP2ZFZZC | topic | open | Wikipedia List of triangle topics#HBRQ, Wikipedia List of mathematical identities#81YX |
| List of trigonometric identities | SVBHQ7H1N6 | topic | open | Wikipedia List of trigonometric identities, Wikidata Q273008 |
| List of Turkish mathematicians | 5KDP2TYZ1Q | unknown | open | Wikipedia Lists of mathematicians#1PGF |
| List of twin teammates in sports | G060BP8WB5 | topic | open | Wikipedia List of twin teammates in sports, Wikidata Q138281235 |
| List of two-dimensional geometric shapes | F74MW27VX0 | topic | open | Wikipedia List of two-dimensional geometric shapes, Wikidata Q16000829 |
| List of two-dimensional geometric shapes | V9ZYZ9CX8P | topic | open | Wikipedia Lists of shapes#P3WW |
| List of type theories | GRR9GYQB2G | unknown | open | Wikipedia Type theory#YNL4 |
| List of types of functions | 81NV27BTBR | topic | open | Wikipedia List of types of functions, Wikidata Q12802481 |
| List of types of numbers | 173YYGN8FN | topic | open | Wikipedia List of types of numbers, Wikidata Q6644179 |
| List of types of sets | 5RDZAZBGN1 | topic | open | Wikipedia List of types of sets, Wikidata Q28659876 |
| List of types of systems theory | NQ0HYBMBXP | topic | open | Wikipedia List of types of systems theory, Wikidata Q16259357 |
| List of U.S. communities with Hispanic-majority populations in the 2000 census | N0886M9C8F | topic | open | Wikipedia List of U.S. communities with Hispanic-majority populations in the 2000 census, Wikidata Q6600906 |
| List of U.S. counties with shortest life expectancy | XG8V19FXCC | topic | open | Wikipedia List of U.S. counties with shortest life expectancy, Wikidata Q42417264 |
| List of U.S. states and territories by GDP | C1PPM86SHB | topic | open | Wikipedia List of U.S. states and territories by GDP, Wikidata Q3241935 |
| List of UC Los Angeles chancellors | NXZ0E8N0FC | unknown | open | Wikipedia List of University of California, Los Angeles people#BHP9 |
| List of Ukrainian Jews | HVESGCRQ0R | topic | open | Wikipedia List of Ukrainian Jews, Wikidata Q6601334 |
| List of Ukrainian mathematicians | 40BTCJSBRF | topic | open | Wikipedia List of Ukrainian mathematicians, Wikidata Q6601350 |
| List of Ukrainian mathematicians | DE7Y7N29RB | topic | open | Wikipedia Lists of mathematicians#05NC |
| List of undecidable problems | 2QFR6BTMCQ | topic | open | Wikipedia List of undecidable problems, Wikidata Q1962320 |
| List of uniform polyhedra | BZH2YY11VH | topic | open | Wikipedia Lists of mathematics topics#KG74 |
| List of uniform polyhedra | Q97530ERKM | topic | open | Wikipedia List of uniform polyhedra, Wikidata Q3253325 |
| List of uniform polyhedra by Schwarz triangle | CCZJ1ZC8ZB | topic | open | Wikipedia Lists of mathematics topics#ZV9Q |
| List of uniform polyhedra by Schwarz triangle | GS9KAJQ515 | topic | open | Wikipedia List of uniform polyhedra by Schwarz triangle, Wikidata Q6644217 |
| List of uniform polyhedra by spherical triangle | JAPM0PV3SD | topic | open | Wikipedia List of uniform polyhedra by spherical triangle, Wikidata Q6644219 |
| List of uniform polyhedra by vertex figure | 874G5TQAYQ | topic | open | Wikipedia List of uniform polyhedra by vertex figure, Wikidata Q6644224 |
| List of uniform polyhedra by Wythoff symbol | SAFY63PASE | topic | open | Wikipedia List of uniform polyhedra by Wythoff symbol, Wikidata Q6644218 |
| List of uniform tilings | RS85S1PZAD | topic | open | Wikipedia List of mathematical shapes#1GTO |
| List of uniform tilings on the sphere, plane, and hyperbolic plane | 614F3JKRF7 | topic | open | Wikipedia Lists of mathematics topics#5KPN |
| List of uniform tilings on the sphere, plane, and hyperbolic plane | K8PMPDS9EY | topic | open | Wikipedia List of uniform tilings on the sphere, plane, and hyperbolic plane, Wikidata Q65053597 |
| list of United States presidential elections where winner lost popular vote | 86QY94WEPK | object | open | Wikidata Q24963437, OEIS A230052 |
| List of United States regional mathematics competitions | PGSBSSTJAY | topic | open | Wikipedia List of United States regional mathematics competitions, Wikidata Q6602917 |
| List of University of California, Los Angeles people | 38Z9VYZM8J | topic | open | Wikipedia List of University of California, Los Angeles people, Wikidata Q6603050 |
| List of unsolved problems in computer science | 53713G1B1Z | topic | open | Wikipedia List of unsolved problems in computer science, Wikidata Q1190519 |
| List of unsolved problems in fair division | AH3Q7J8ESD | topic | open | Wikipedia List of unsolved problems in fair division, Wikidata Q85781021 |
| List of unsolved problems in information theory | WGK3QKKJEP | topic | open | Wikipedia List of unsolved problems in information theory, Wikidata Q18208307 |
| List of unsolved problems in statistics | BWKJVXBR67 | topic | open | Wikipedia List of unsolved problems in statistics, Wikidata Q2690198 |
| List of unsolved problems in statistics | QTTWF5W8AE | topic | open | Wikipedia Lists of statistics topics#9QQP |
| List of valid argument forms | RDTVD093CB | topic | open | Wikipedia List of valid argument forms, Wikidata Q6644532 |
| List of variational topics | FHT9MRDMBE | topic | open | Wikipedia List of variational topics, Wikidata Q6644561 |
| List of variational topics | ZPC3767VVW | topic | open | Wikipedia Lists of mathematics topics#LLC6 |
| List of vector spaces in mathematics | 58A9H1YYTX | topic | open | Wikipedia List of vector spaces in mathematics, Wikidata Q6644572 |
| List of video game publishers | NC1WCGQ0TZ | topic | open | Wikipedia List of video game publishers, Wikidata Q1053990 |
| List of wavelet-related transforms | B3AYNX4M49 | topic | open | Wikipedia List of wavelet-related transforms, Wikidata Q17008768 |
| List of wavelets | X152YPZH85 | unknown | open | Wikipedia Wavelet#QXLA |
| List of websites founded before 1995 | N1JJZFD6Q0 | topic | open | Wikipedia List of websites founded before 1995, Wikidata Q6645174 |
| List of Welsh mathematicians | HGV5E9HX9T | unknown | open | Wikipedia Lists of mathematicians#AAEY |
| List of Wenninger polyhedron models | 7CH3979S6G | topic | open | Wikipedia List of Wenninger polyhedron models, Wikidata Q3893180 |
| List of women logicians | MDB7JV6J39 | topic | open | Wikipedia List of women logicians, Wikidata Q126065229 |
| List of works by Averroes | MJWHADAMGH | topic | open | Wikipedia List of works by Averroes, Wikidata Q6645591 |
| List of works by Nicolas Minorsky | 6432RWZS3X | topic | open | Wikipedia List of works by Nicolas Minorsky, Wikidata Q16386710 |
| List of works by Nikolay Bogolyubov | G06VAP6NBQ | topic | open | Wikipedia List of works by Nikolay Bogolyubov, Wikidata Q6645774 |
| List of works by Petr Vaníček | WTZFJEZ1QX | topic | open | Wikipedia List of works by Petr Vaníček, Wikidata Q56292456 |
| List of works designed with the golden ratio | Q8GA2NS2K9 | topic | open | Wikipedia List of works designed with the golden ratio, Wikidata Q6645732 |
| List of world regions by life expectancy | PQ79W40TAT | topic | open | Wikipedia List of world regions by life expectancy, Wikidata Q111891153 |
| List of zeta functions | 9D1WGYEZ25 | topic | open | Wikipedia List of zeta functions, Wikidata Q112944097 |
| List prediction | BNNFWV1RCN | statement | record (an item of a paper that no node asks for yet. The record keeps its edges in the record plane (corpus arxiv AX8.6)) | arXiv 2610.02407#QGCG |
| List Prediction with Independent Uniform Auxiliary Inputs | 7S8QPZD408 | statement | record (an item of a paper that no node asks for yet. The record keeps its edges in the record plane (corpus arxiv AX8.6)) | arXiv 2610.02407#FNAP |
| List scheduling | 303K75CKMT | definition | open | Wikipedia List scheduling, Wikidata Q6646016 |
| List scheduling | TYSR6KHVTG | definition | open | Wikipedia List of algorithms#D3H9 |
| List-decodable unsqueezing | BDAP3QHDRN | statement | record (an item of a paper that no node asks for yet. The record keeps its edges in the record plane (corpus arxiv AX8.6)) | arXiv 2610.06810#NXZR |
| Listing number | 6DN09NNWVQ | definition | open | Wikipedia Listing number, Wikidata Q6646534 |
| Listing number | SCP0MG92NW | definition | open | Wikipedia List of topology topics#T8U2 |
| Lists of integrals | W1DJA9QMXZ | topic | open | Wikipedia Lists of mathematics topics#32CY, Wikipedia List of theorems#2818 |
| Lists of integrals | W2CG5707RM | topic | open | Wikipedia Lists of integrals, Wikidata Q423189 |
| Lists of mathematicians | 788BK27GDE | topic | open | Wikipedia Lists of mathematicians, Wikidata Q66777993 |
| Lists of mathematics topics | WSSZGZ41N8 | topic | open | Wikipedia Lists of mathematics topics, Wikidata Q3240104 |
| Lists of shapes | D8P19JXJAB | topic | open | Wikipedia Lists of shapes, Wikidata Q3243136 |
| Lists of statistics topics | 3Z0GY1JN1H | topic | open | Wikipedia Lists of statistics topics, Wikidata Q6647235 |
| Lists of statistics topics | 646VAF1AMH | topic | open | Wikipedia Lists of mathematics topics#CQZW |
| Listwise deletion | QASQTWQ33M | definition | open | Wikipedia List of statistics articles#DJTN |
| Listwise deletion | WYA7JGACYW | definition | open | Wikipedia Listwise deletion, Wikidata Q6647277 |
| Litecoin | 42FRXKG3K7 | definition | open | Wikipedia Litecoin, Wikidata Q4043030 |
| literal | 5P9K2523H8 | definition | open | Wikipedia Glossary of logic#QM86 |
| literal | MP14V9K365 | definition | open | Wikidata Q14235582, MathWorld Literal, Wikipedia Literal (mathematical logic) |
| Literal and figurative language | 7KJHSPRY0H | definition | open | Wikipedia Literal and figurative language, Wikidata Q7363315 |
| Literary device | 31D7GVF0PH | definition | open | Wikipedia Literary device, Wikidata Q182545 |
| Lithium Triangle | QAYHCX2HSW | unknown | open | Wikipedia List of triangle topics#3T3X |
| Lithospheric flexure | 9R57NJ6HM2 | definition | open | Wikipedia Lithospheric flexure, Wikidata Q6648199 |
| Lithuania | ZPVJRGTVWR | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q37, ProofWiki Mathematician:Mathematicians/Sorted_By_Nation/Lithuania |
| Lithuanian Mathematical Society | FRYT077VRJ | definition | open | Wikipedia List of mathematical societies#183V |
| Lithuanian Mathematical Society | PZ4QE4XP6R | definition | open | Wikipedia Lithuanian Mathematical Society, Wikidata Q108936707 |
| litre | 7YF2YXGTX4 | definition | open | Wikidata Q11582, ProofWiki Definition:Metric_System/Volume/Litre |
| LITS | 6SRB5BJDWZ | definition | open | Wikipedia LITS, Wikidata Q6458834 |
| Littelmann path model | GZ6QJ4MQ1J | definition | open | Wikipedia Littelmann path model, Wikidata Q6648763 |
| Little | KC61F6J7TV | topic | open | Wikipedia List of incomplete proofs#959B |
| Little Astronomy | 7265RARWJJ | definition | open | Wikipedia Little Astronomy, Wikidata Q134503388 |
| Little cubes operad | ZK2EAEBKGG | unknown | open | Wikipedia Operad#ATCE |
| little harder | E82WZ7GZMD | exercise | open | lebl_diffyqs ch-first-order-ode.tex#exercise-6 |
| little o notation | 373A5JNHEF | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q110208840, MathWorld Little-ONotation, ProofWiki Symbols:O/Little-O_Notation |
| little oh notation | M9ZBR4FFAE | concept | open | applied_combinatorics index/4.3/little-oh-notation |
| Little Picard Theorem | Q5CBHD3N0Y | statement | open | Wikipedia Picard theorem#QPHW |
| Little Picard theorem | TCK7XPXDV1 | statement | open | Wikipedia Modular lambda function#79F9 |
| Little planet effect | ZM23DGMCQR | unknown | open | Wikipedia Stereographic projection#OOXE |