| José Enrique Moyal | HDC3XGE57V | unknown | open | Wikipedia List of Jewish mathematicians#RT8D |
| José F. Escobar | XBAVJ365SZ | topic | open | Wikipedia José F. Escobar, Wikidata Q5939624 |
| José Felipe Voloch | CCZAA4D7D0 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q20716228, nLab Felipe Voloch |
| José Felipe Voloch | VCSW43JMVK | unknown | open | Wikipedia List of people by Erdős number#VJ7A |
| José Maria | 83AYQEWW5Z | unknown | open | Wikipedia List of twin teammates in sports#CQW2 |
| José Martín Espinosa de los Monteros | 5YX1JKBT92 | topic | open | Wikipedia José Martín Espinosa de los Monteros, Wikidata Q5942488 |
| José María Lanz | 6DVEMK0KBX | topic | open | Wikipedia José María Lanz, Wikidata Q11685891 |
| José María Planas Corbella | QNE5XDR44P | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#HL83 |
| José Mendieta | 413XBDXY4G | topic | open | Wikipedia José Mendieta, Wikidata Q114495982 |
| José Miguel Figueroa-O'Farrill | BR5T8RTDX9 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q102271742, nLab José Figueroa-O’Farrill |
| José Sebastião e Silva | ZKY8Y7VGC6 | topic | open | Wikipedia José Sebastião e Silva, Wikidata Q6294007 |
| José Ádem | 807FCGCN6J | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q505725, nLab José Ádem |
| José-Miguel Bernardo | 8JKTRDMSHT | unknown | open | Wikipedia List of fellows of the American Statistical Association#XZQ6 |
| Josée Dupuis | GV4EEAG09N | unknown | open | Wikipedia List of fellows of the American Statistical Association#HUIJ |
| Joséphine Guidy Wandja | N158NZ6SQ4 | topic | open | Wikipedia Joséphine Guidy Wandja, Wikidata Q12892125 |
| Jouanolou's key formula | MWF5EK0GKJ | statement | open | Wikipedia Residual intersection#0E2A |
| Jouanolou's trick | 1ANRNQ078R | definition | open | Wikipedia Jouanolou's trick, Wikidata Q55615352 |
| Joubert's theorem | S7C4H52779 | statement | open | mathlib_1000 Q104871594, Wikidata Q104871594, thousand_plus Q104871594, Wikipedia Joubert's theorem |
| Joubert's theorem | TERP42FFV8 | statement | open | Wikipedia List of theorems#YMDD |
| Jouffret, Esprit | A4RYJSBF6A | unknown | open | Wikipedia List of statisticians#TH7X |
| Jouko Väänänen | PRESSS053F | topic | open | Wikipedia Jouko Väänänen, Wikidata Q16145829 |
| Jouko Väänänen | W14BF2SDWT | topic | open | Wikipedia List of people by Erdős number#L8DC |
| Joukowsky transform | 80DXY6JVET | definition | open | Wikipedia Joukowsky transform, Wikidata Q1794703 |
| joule | RB2XAG0R31 | definition | open | Wikidata Q25269, ProofWiki Definition:SI/Energy/Joule |
| Joule's second law | ZACA66JRMX | statement | open | Wikipedia Joule–Thomson effect#PR11 |
| Joule-Thomson (Kelvin) coefficient | YBDA35Y3ZA | unknown | open | Wikipedia Joule–Thomson effect#0PJG |
| Joules per kilogram | FQB141ZYFG | unknown | open | Wikipedia Enthalpy#62G0 |
| Joule–Thomson effect | CSJ3K01SWC | definition | open | Wikipedia Joule–Thomson effect, Wikidata Q724510 |
| Journal d'Analyse Mathématique | 7HQC3B94PJ | definition | open | Wikipedia Journal d'Analyse Mathématique, Wikidata Q12403226 |
| Journal de l'École Polytechnique | XDAHEX79QM | unknown | out_of_scope (a book, not an item of mathematics) | Wikidata Q3186845, ProofWiki Book:Journal/Journal_de_l'École_Polytechnique |
| Journal of Agricultural, Biological and Environmental Statistics | NFHB3DXPR3 | definition | open | Wikipedia Journal of Agricultural, Biological and Environmental Statistics, Wikidata Q97192392 |
| Journal of Agricultural, Biological, and Environmental Statistics | MA8XH33ZS2 | definition | open | Wikipedia List of statistics journals#U8RH |
| Journal of Algebraic Geometry | 6NAQFNSEX5 | unknown | open | Wikipedia American Mathematical Society#6K3R |
| Journal of Applied Econometrics | RJCN8TR7DM | topic | open | Wikipedia Journal of Applied Econometrics, Wikidata Q6294781 |
| Journal of Applied Econometrics | XA733V61MK | topic | open | Wikipedia List of statistics journals#E9J9 |
| Journal of Applied Non-Classical Logics | BFHCGSAMAP | definition | open | Wikipedia Journal of Applied Non-Classical Logics, Wikidata Q6294788 |
| Journal of Applied Non-Classical Logics | HS4Z129K4C | definition | open | Wikipedia List of logic journals#6CIY |
| Journal of Applied Probability | FG8VHJ82MQ | unknown | open | Wikipedia List of probability journals#9NDV |
| Journal of Applied Statistics | JFMWEKBMDM | definition | open | Wikipedia List of statistics journals#FNTV |
| Journal of Applied Statistics | W6ZAJVAGMB | definition | open | Wikipedia Journal of Applied Statistics, Wikidata Q15749616 |
| Journal of Automated Reasoning | XXMNATDS8S | unknown | open | Wikipedia List of logic journals#8DN6 |
| Journal of Business & Economic Statistics | AKFCF1SJCK | topic | open | Wikipedia List of statistics journals#2K5E |
| Journal of Business & Economic Statistics | XQFQ6QG5ZH | topic | open | Wikipedia Journal of Business & Economic Statistics, Wikidata Q4242099 |
| Journal of Chemometrics | P1RA4803E8 | definition | open | Wikipedia List of statistics journals#WQAF |
| Journal of Chemometrics | Z8AWY1E253 | definition | open | Wikipedia Journal of Chemometrics, Wikidata Q127755 |
| Journal of Commutative Algebra | D1DPHSD7T3 | topic | open | Wikipedia Journal of Commutative Algebra, Wikidata Q55615358 |
| Journal of Computational and Applied Mathematics | 5QVETR8FQZ | definition | open | Wikipedia List of numerical analysis topics#0STB |
| Journal of Computational and Applied Mathematics | 9EJCK1JP28 | definition | open | Wikipedia Journal of Computational and Applied Mathematics, Wikidata Q13739406 |
| Journal of Computational and Graphical Statistics | JM78PJ53WC | definition | open | Wikipedia Journal of Computational and Graphical Statistics, Wikidata Q6295010 |
| Journal of Computational and Graphical Statistics | Z292GSCSZ1 | definition | open | Wikipedia List of statistics journals#OPO9 |
| Journal of Cryptology | NRZ5TAYR13 | topic | open | Wikipedia Journal of Cryptology, Wikidata Q743119 |
| Journal of Difference Equations and Applications | QFBTH5J7QF | definition | open | Wikipedia Journal of Difference Equations and Applications, Wikidata Q13359978 |
| Journal of Differential Equations | Q5HQK2G008 | definition | open | Wikipedia Journal of Differential Equations |
| Journal of Differential Geometry | 4JZDJ075KV | definition | open | Wikipedia Journal of Differential Geometry, Wikidata Q6295090 |
| Journal of Econometrics | CBJ82SSV7Q | definition | open | Wikipedia List of statistics journals#EZKP |
| Journal of Econometrics | ZJC5QGM48P | definition | open | Wikipedia Journal of Econometrics, Wikidata Q3790192 |
| Journal of Educational and Behavioral Statistics | 4GQ7J2RRBC | definition | open | Wikipedia Journal of Educational and Behavioral Statistics, Wikidata Q6295129 |
| Journal of Educational and Behavioral Statistics | KE97SSSN7G | definition | open | Wikipedia List of statistics journals#X01U |
| Journal of Experimental and Theoretical Physics | MHEWYBF24Y | unknown | open | Wikipedia List of works by Nikolay Bogolyubov#I0M7 |
| Journal of Experimental and Theoretical Physics | VRNMKCJR5R | unknown | open | Wikipedia List of works by Nikolay Bogolyubov#ROWT |
| Journal of Experimental and Theoretical Physics | YC9E3JSR1J | unknown | open | Wikipedia List of works by Nikolay Bogolyubov#JBIS |
| Journal of Formalized Reasoning | 95TZ0CEJ7D | definition | open | Wikipedia Journal of Formalized Reasoning, Wikidata Q6295233 |
| Journal of Geometry | JGTM48E12H | definition | open | Wikipedia Journal of Geometry, Wikidata Q15750476 |
| Journal of Homotopy and Related Structures | 69XEM3EWC6 | unknown | out_of_scope (a book or a journal, not an item of mathematics) | Wikidata Q15428801, nLab Journal of Homotopy and Related Structures |
| Journal of Industrial and Management Optimization | EZYCTZV4XJ | definition | open | Wikipedia Journal of Industrial and Management Optimization, Wikidata Q6295341 |
| Journal of Integer Sequences | 7C9AH6KSAD | definition | open | Wikipedia Journal of Integer Sequences, Wikidata Q15749163 |
| Journal of Logic and Algebraic Programming | BBA0ESZK4W | unknown | open | Wikipedia List of logic journals#C2L1 |
| Journal of Logic and Computation | C8KXWHEFK0 | definition | open | Wikipedia Journal of Logic and Computation, Wikidata Q6295460 |
| Journal of Logic and Computation | YB693KJ3Y5 | definition | open | Wikipedia List of logic journals#LB2Z |
| Journal of Logic Programming | EVFSR6RH6D | unknown | open | Wikipedia List of logic journals#75YE |
| Journal of Logic, Language and Information | 53B4TJM6VC | definition | open | Wikipedia List of logic journals#P306 |
| Journal of Logic, Language and Information | G9CSQZPCQF | definition | open | Wikipedia Journal of Logic, Language and Information, Wikidata Q15708884 |
| Journal of Mathematical Analysis and Applications | Y2HMRV6ZN8 | definition | out_of_scope (a book, not an item of mathematics) | Wikidata Q15438343, ProofWiki Book:Journal/Journal_of_Mathematical_Analysis_and_Applications, Wikipedia Journal of Mathematical Analysis and Applications |
| Journal of Mathematical Fluid Mechanics | ZAN507BF2Q | definition | open | Wikipedia Journal of Mathematical Fluid Mechanics |
| Journal of Mathematical Logic | 525MXMZ016 | unknown | open | Wikipedia List of logic journals#VWG4 |
| Journal of Mathematical Physics, Analysis, Geometry | HSXR5V828A | definition | open | Wikipedia Journal of Mathematical Physics, Analysis, Geometry, Wikidata Q55434307 |
| Journal of Mathematical Psychology | BA6DSF7JAH | definition | open | Wikipedia Journal of Mathematical Psychology, Wikidata Q6295503 |
| Journal of Mathematics and the Arts | 3E65RP1Q3N | definition | open | Wikipedia Journal of Mathematics and the Arts, Wikidata Q6295505 |
| Journal of Modern Applied Statistical Methods | M9VKG464CQ | definition | open | Wikipedia List of statistics journals#DHFE |
| Journal of Modern Applied Statistical Methods | PPTQCBCDXE | definition | open | Wikipedia Journal of Modern Applied Statistical Methods, Wikidata Q6295585 |
| Journal of Multiple-Valued Logic and Soft Computing | 2EJR2H2D51 | unknown | open | Wikipedia List of logic journals#YW2L |
| Journal of Multivariate Analysis | 22HKGJDX7C | definition | open | Wikipedia List of statistics journals#HBJK |
| Journal of Multivariate Analysis | MF5AA8ZBDM | definition | open | Wikipedia Journal of Multivariate Analysis, Wikidata Q6295609 |
| Journal of Non-Classical Logic | F4FXGVVD2Z | unknown | open | Wikipedia List of logic journals#2YTF |
| Journal of Number Theory | FVW6FQAKQX | definition | open | Wikipedia Journal of Number Theory, Wikidata Q4041902 |
| Journal of Official Statistics | 2TSA1DR8RC | definition | open | Wikipedia List of statistics journals#J41N |
| Journal of Official Statistics | H0PX4CT44Y | definition | open | Wikipedia Journal of Official Statistics, Wikidata Q6295679 |
| Journal of Philosophical Logic | K26HQE7EE5 | definition | open | Wikipedia List of logic journals#IV1A |
| Journal of Philosophical Logic | TT1C3N6YE2 | definition | open | Wikipedia Journal of Philosophical Logic, Wikidata Q6295748 |
| Journal of Physics A | ENHPF0FP6R | definition | open | Wikipedia Journal of Physics A, Wikidata Q1068402 |
| Journal of Recreational Mathematics | 26KTFBKD3J | definition | open | Wikipedia Journal of Recreational Mathematics, Wikidata Q3186943 |
| Journal of Research of the National Bureau of Standards (United States) | 401JEPD9P2 | unknown | out_of_scope (a book, not an item of mathematics) | Wikidata Q96329221, ProofWiki Book:Journal/Journal_of_Research_of_the_National_Bureau_of_Standards |
| Journal of Semantics | DCP954BTZ7 | definition | open | Wikipedia Journal of Semantics, Wikidata Q6295896 |
| Journal of Singularities | HVKVYH6XXE | definition | open | Wikipedia Journal of Singularities, Wikidata Q85772171 |
| Journal of Statistical Computation and Simulation | KJTPGFJRJA | definition | open | Wikipedia Journal of Statistical Computation and Simulation, Wikidata Q6295961 |
| Journal of Statistical Computation and Simulation | VJMJD75W3F | definition | open | Wikipedia List of statistics journals#4LIC |
| Journal of Statistical Mechanics: Theory and Experiment | VJNPRSVE15 | unknown | open | Wikipedia List of statistics journals#KX1H |
| Journal of Statistical Physics | Y3CDRTKJXW | unknown | open | Wikipedia List of statistics journals#TF2A |
| Journal of Statistical Software | 3RX723Q7WA | definition | open | Wikipedia List of statistics journals#0RG4, Wikipedia List of statistics journals#C7FI |
