| Leonid Polterovich | 9ZKDHZT67G | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#EZ13 |
| Leonid Polterovich | HDSTME9BCQ | topic | open | Wikipedia List of Jewish mathematicians#4CQ5 |
| Leonid Positselski | BH2DATD8FT | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q20739510, nLab Leonid Positselski |
| Leonid Stein | M090N0J3TX | unknown | open | Wikipedia List of Ukrainian Jews#SEYZ |
| Leonid Vaserstein | 62FVC7KBRQ | topic | open | Wikipedia Leonid Vaserstein, Wikidata Q6526507 |
| Leonida Tonelli | BYFPKGQBWE | topic | open | Wikipedia List of Italian mathematicians#HF3M, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#3OJ2, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#VORG, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#XU6Q |
| Leonida Tonelli | QTMQ1K4JFA | topic | open | Wikipedia List of mathematicians born in the 19th century#8AF3 |
| Leonida Tonelli | S3CPRYBK20 | topic | open | Wikipedia Leonida Tonelli, Wikidata Q1819452 |
| Leonidas Alaoglu | 9FR5CERHE5 | topic | open | Wikipedia List of Greek mathematicians#PG5G |
| Leonidas Alaoglu | DGDF40N288 | topic | open | Wikipedia Leonidas Alaoglu, Wikidata Q2195465 |
| Leonidas Alaoglu | NG67EPY7MK | topic | open | Wikipedia List of people by Erdős number#0QYN |
| Leonidas J. Guibas | CSPPHQDB37 | unknown | open | Wikipedia List of people by Erdős number#714E |
| Leontief production function | Z900Y6WVY4 | definition | open | Wikipedia Leontief production function, Wikidata Q1819524 |
| Leontief, Wassily | MQFPGQZT3N | unknown | open | Wikipedia List of statisticians#UTWE |
| Leonty Magnitsky | QWGN4T81QX | topic | open | Wikipedia Leonty Magnitsky, Wikidata Q2636609 |
| Leonty Magnitsky | SN2WZM5DZF | topic | open | Wikipedia List of Russian mathematicians#8H89 |
| Leopold Bernhard Gegenbauer | 6BVKK6TDGF | unknown | open | Wikipedia List of eponyms of special functions#NT0S |
| Leopold Fejér | RPHSYWQ5K9 | topic | open | Wikipedia List of Jewish mathematicians#2JIQ |
| Leopold Infeld | 10FDDGEN3J | unknown | open | Wikipedia List of people by Erdős number#A2T4 |
| Leopold Infeld | 188JC3MWQ5 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q465488, nLab Leopold Infeld |
| Leopold Infeld | 7GW7T9H2B9 | unknown | open | Wikipedia List of contributors to general relativity#POTI |
| Leopold Kronecker | 9N6DDYKMDK | topic | open | Wikipedia List of Jewish mathematicians#DGZ1 |
| Leopold Kronecker | J8XW22DA74 | topic | open | Wikipedia List of real analysis topics#UNPZ, Wikipedia List of mathematicians born in the 19th century#PK21 |
| Leopold Kronecker | SR3WBVXEEX | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q76410, nLab Leopold Kronecker, Wikipedia Leopold Kronecker |
| Leopold Kronecker | X2J5GWA024 | topic | open | Wikipedia List of logicians#WIR0 |
| Leopold Kronecker | XT8A7YT4SS | topic | open | Wikipedia List of German mathematicians#KL51 |
| Leopold Löwenheim | 1SZBZ970MW | topic | open | Wikipedia List of German mathematicians#YD6Q |
| Leopold Löwenheim | 2B0T1AJAPF | topic | open | Wikipedia List of Jewish mathematicians#T9H4 |
| Leopold Löwenheim | 86NW2YHMJ5 | topic | open | Wikipedia List of logicians#6XWI |
| Leopold Löwenheim | S3JE9ZBEZ3 | topic | open | Wikipedia Leopold Löwenheim, Wikidata Q77504 |
| Leopold Pars | WX7MS78KRT | topic | open | Wikipedia Leopold Pars, Wikidata Q37736693 |
| Leopold Schmetterer | 3JMN456RHP | unknown | open | Wikipedia List of fellows of the American Statistical Association#M12B |
| Leopold Vietoris | JFD8WPH3XT | topic | open | Wikipedia List of mathematicians born in the 19th century#E1BP |
| Leopold Vietoris | P45E079TMV | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q78693, nLab Leopold Vietoris, Wikipedia Leopold Vietoris |
| Leopoldo Nachbin | DWPSSK7BBF | topic | open | Wikipedia List of Jewish mathematicians#T8AZ |
| Leopoldo Nachbin | SRRWPBKG1Q | topic | open | Wikipedia List of people by Erdős number#KTQ2, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#QSNY |
| Leopoldo Nachbin | X5BP7NCPY6 | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q4068875, nLab Leopoldo Nachbin, Wikipedia Leopoldo Nachbin |
| Leopoldo Penna Franca | S9DBTM71SM | topic | open | Wikipedia Leopoldo Penna Franca, Wikidata Q195741 |
| Leopoldt reflection theorem | G9S4W05K41 | unknown | open | Wikipedia Reflection theorem#HLG8 |
| Leopoldt's conjecture | 9XYD5TWG3M | conjecture | open | Wikipedia List of unsolved problems in mathematics#0WLP |
| Leopoldt's conjecture | QW5YQZ7Z3C | conjecture | open | Wikipedia Leopoldt's conjecture, Wikidata Q2993327 |
| Lepage test | DP5XJ15QX7 | definition | open | Wikipedia Lepage test, Wikidata Q85776276 |
| Lepage test | GGBGZ0933F | definition | open | Wikipedia List of statistics articles#VZKA |
| Leprosy | PXE5VPK0QJ | unknown | open | Wikipedia List of common misconceptions about science, technology, and mathematics#9VEE |
| Leptokurtic | D0TBDPHQKN | unknown | open | Wikipedia Kurtosis#44JZ |
| lepton | 3QF4TGTN1G | unknown | open | Wikidata Q82586, nLab lepton |
| leptoquark | TR3CZSQEDJ | unknown | open | Wikidata Q1758767, nLab leptoquark |
| Leray cover | EGB9DNXVSX | definition | open | Wikipedia Leray cover, Wikidata Q17098456 |
| Leray spectral sequence | 8P4NTGZYZW | concept | open | Wikidata Q6528749, nLab Leray spectral sequence, Wikipedia Leray spectral sequence |
| Leray spectral sequence | N4ZM1NH6V7 | definition | open | Wikipedia Glossary of algebraic topology#GNNF |
| Leray's nerve theorem | JMZ0MJPHSW | statement | open | Wikipedia Nerve complex#OR7L |
| Leray's theorem | 3JAC3N1GS8 | statement | open | Wikipedia List of theorems#D686 |
| Leray's theorem | TRAD7WB470 | statement | open | mathlib_1000 Q6528747, Wikidata Q6528747, thousand_plus Q6528747, Wikipedia Leray's theorem |
| Leray-Schauder Theorem | QAGTPS6N7Q | 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 2211.13105#JQEH |
| Leray–Hirsch theorem | SYZSDMCT87 | statement | open | mathlib_1000 Q6528751, Wikidata Q6528751, thousand_plus Q6528751, Wikipedia Leray–Hirsch theorem |
| Leray–Hirsch theorem | YPD9VM4P6N | statement | open | Wikipedia List of theorems#LHO2 |
| Leray–Schauder degree | G55P1TK2ES | definition | open | Wikipedia Leray–Schauder degree, Wikidata Q111912958 |
| Lerch transcendent | JR17Y5JSC2 | definition | open | Wikidata Q1546155, MathWorld LerchTranscendent, ProofWiki Definition:Lerch_Transcendent, Wikipedia Lerch transcendent |
| Lerch zeta function | GA86G09DW6 | definition | open | Wikipedia List of zeta functions#WXJK |
| Lerch's formula | GB1T4Q6128 | statement | open | Wikipedia Fermat quotient#Q71P |
| Lerche–Newberger sum rule | 5JR4MBMHG0 | definition | open | Wikipedia Lerche–Newberger sum rule, Wikidata Q6528762 |
| Lerner symmetry theorem | 4GV860SZ35 | statement | open | mathlib_1000 Q6528849, Wikidata Q6528849, thousand_plus Q6528849, Wikipedia Lerner symmetry theorem |
| Lerner symmetry theorem | MTGTB1408K | statement | open | Wikipedia List of theorems#RR9G |
| Leroy Milton Kelly | 3GDF81R7ND | topic | open | Wikipedia Leroy Milton Kelly, Wikidata Q6529006 |
| Leroy Milton Kelly | P5CA863FPM | topic | open | Wikipedia List of people by Erdős number#06U9 |
| Leroy P. Steele Prize | 4C2B5DRXB2 | definition | open | Wikipedia Leroy P. Steele Prize, Wikidata Q925929 |
| Lertap 5 | MDTF0G0TW3 | unknown | open | Wikipedia Psychometric software#SPHL |
| Les Deux Frères | J7HZBEXXVZ | unknown | open | Wikipedia List of places with numeric names#6NWH |
| Les Météores | 9WPHZQDWXD | unknown | open | Wikipedia René Descartes#3JB9 |
| Lesk algorithm | P29WEMDPNR | unknown | open | Wikipedia List of algorithms#2OST |
| Lesley Sibner | BA522WQBR9 | topic | open | Wikipedia Lesley Sibner, Wikidata Q1285477 |
| Leslie Abramson | D89CAACMNB | unknown | open | Wikipedia List of University of California, Los Angeles people#ZML8 |
| Leslie Cheng | 7KPN8J4942 | topic | open | Wikipedia Leslie Cheng, Wikidata Q67000705 |
| Leslie Colin Woods | 7XCFF8Y38R | topic | open | Wikipedia Leslie Colin Woods, Wikidata Q37739262 |
| Leslie Comrie | SXMR6GV5HM | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q328362, ProofWiki Mathematician:Leslie_John_Comrie |
| Leslie Earl Simon | G7S527NSXP | topic | open | Wikipedia Leslie Earl Simon, Wikidata Q6530781 |
| Leslie Earl Simon | HHGFJTXEP7 | topic | open | Wikipedia List of fellows of the American Statistical Association#ILCI |
| Leslie Fox | BB6SZ50RAA | topic | open | Wikipedia Leslie Fox, Wikidata Q6530813 |
| Leslie Fox Prize for Numerical Analysis | SFN0H814RH | definition | open | Wikipedia Leslie Fox Prize for Numerical Analysis, Wikidata Q6530815 |
| Leslie Gabriel Valiant | 6988TR7PKV | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#5OTI |
| Leslie Greengard | H3M8DVTEQ2 | topic | open | Wikipedia List of Jewish mathematicians#PQNS |
| Leslie Greengard | R2SYW02PZA | topic | open | Wikipedia Leslie Greengard, Wikidata Q1820787 |
| Leslie Greengard | V3PATQ88WJ | topic | open | Wikipedia List of people by Erdős number#E86P, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#BGPW |
| Leslie Hogben | W7BMY2FZ1R | topic | open | Wikipedia Leslie Hogben, Wikidata Q67090841 |
| Leslie Hogben | Z8V30PWR3J | topic | open | Wikipedia List of people by Erdős number#AJ51 |
| Leslie Kish | 1RDA7AFAG1 | topic | open | Wikipedia List of fellows of the American Statistical Association#9ZS5 |
| Leslie Kish | 3Q0Z6PJJH8 | topic | open | Wikipedia Leslie Kish, Wikidata Q1111892 |
| Leslie Lamport | QDEJTGMDD1 | unknown | open | Wikipedia List of people by Erdős number#5QUA |
| Leslie Leland Locke | TWQBTMHZVK | topic | open | Wikipedia Leslie Leland Locke, Wikidata Q131620090 |
| Leslie M. Moore | DMEWNYBM15 | unknown | open | Wikipedia List of fellows of the American Statistical Association#2IST |
| Leslie matrix | WWV1D3T3V7 | definition | open | Wikidata Q943800, EoM Leslie_matrix, Wikipedia Leslie matrix |
| Leslie McClure | 6MHSHTJHFK | topic | open | Wikipedia List of fellows of the American Statistical Association#PCEL |
| Leslie McClure | Q5XSWDAXW8 | topic | open | Wikipedia Leslie McClure, Wikidata Q100731155 |
| Leslie Saper | QAC219YPAV | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#HPT8 |
| Leslie Valiant | DW66VBENNT | unknown | open | Wikipedia List of people by Erdős number#2CWD |
| Lesnoy | TC6WMCF0Y7 | unknown | open | Wikipedia List of places with numeric names#I0K7 |
| less | NHXJFEW76Z | definition | open | Wikipedia Glossary of mathematical symbols#62LZ |
| less than | H3WFT852AN | unknown | open | Wikidata Q52834024, MathWorld Less |
| less-equal sign | PPPF9Q7D5K | definition | open | Wikipedia Glossary of mathematical symbols#UQCL |
| less-equal sign | S14JZDMF9W | definition | open | Wikipedia Glossary of mathematical symbols#UBJP |