| Helmut Maier | ABDR6YQ3YP | topic | open | Wikipedia List of people by Erdős number#SLWM, Wikipedia List of German mathematicians#DBEQ |
| Helmut Röhrl | WZ3DS992H2 | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#81FW, Wikipedia List of German mathematicians#VOLV |
| Helmut Röhrl | Z4DEB7E2NF | topic | open | Wikipedia Helmut Röhrl, Wikidata Q15298483 |
| Helmut Schwichtenberg | E123KHR6P0 | topic | open | Wikipedia Helmut Schwichtenberg, Wikidata Q1291944 |
| Helmut Ulm | 225QGNJE72 | topic | open | Wikipedia Helmut Ulm, Wikidata Q10294567 |
| Helmut Ulm | TCR2N5MEF7 | topic | open | Wikipedia List of German mathematicians#3C4X |
| Helmut Veith | MYHWJ1SKVQ | unknown | open | Wikipedia List of people by Erdős number#DNEM |
| Helmut Wielandt | JHS78GKKT1 | unknown | open | Wikipedia List of group theory topics#E5LA, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#D30F, Wikipedia List of German mathematicians#281I |
| Helmuth Gericke | KF5YQB2Y22 | topic | open | Wikipedia Helmuth Gericke, Wikidata Q92406 |
| Heloise | FVCFDA8F8D | topic | open | Wikipedia Heloise, Wikidata Q5656 |
| Helpful theorems | AR70RJ4ACS | statement | open | Wikipedia Deduction theorem#J3K3 |
| Helson–Kahane–Katznelson–Rudin theorem | 3ZRQ6F0AHB | statement | open | Wikipedia Fourier algebra#F994 |
| HEM9VH6MS2 | HEM9VH6MS2 | 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 2508.08809#DHY6 |
| Hema Srinivasan | VAXZBY1E5Q | topic | open | Wikipedia Hema Srinivasan, Wikidata Q43369838 |
| Hemachandra | 1Y7R6468ZQ | unknown | open | Wikipedia List of Indian mathematicians#YI2A |
| Hemi-cuboctahedron | SYVBA08YRT | definition | open | Wikipedia Hemi-cuboctahedron, Wikidata Q19597418 |
| Hemi-dodecahedron | G60EZQHDMW | object | open | Wikipedia Hemi-dodecahedron, Wikidata Q3893210 |
| Hemi-icosahedron | ZBGG3FV7WS | object | open | Wikipedia Hemi-icosahedron, Wikidata Q3893218 |
| Hemi-icosidodecahederal graph | 36F0S34971 | unknown | open | Wikipedia Icosidodecahedron#BG61 |
| Hemi-metric | H53TY8JJQD | unknown | open | Wikipedia Metric space#K268 |
| Hemi-octahedron | CRGWBM2WPW | object | open | Wikipedia Hemi-octahedron, Wikidata Q17076137 |
| Hemicompact | PH5K3EZ59V | definition | open | Wikipedia Glossary of general topology#1TND |
| hemicompact space | 15EAGZMX0D | definition | open | Wikidata Q5711485, nLab hemicompact space, Wikipedia Hemicompact space |
| Hemicontinuity | 41XE2JTR6Z | definition | open | Wikipedia Hemicontinuity, Wikidata Q5711478 |
| Hemicube | B0WJZGNCNE | object | open | Wikipedia Hemicube (geometry), Wikidata Q3893168 |
| Hemicube (computer graphics) | FHJNNQ8HHH | unknown | open | Wikipedia List of computer graphics and descriptive geometry topics#OFJL |
| Hemihelix | JW1K51MRSB | definition | open | Wikipedia Hemihelix, Wikidata Q17022315 |
| hemiperfect number | Z2053Y34K5 | definition | open | Wikidata Q3281256, OEIS A159907, Wikipedia Hemiperfect number |
| Hemipolyhedron | 5F2AS85Q6H | object | open | Wikipedia Hemipolyhedron, Wikidata Q5711997 |
| Hemipolyhedron | CRCN7E1W5Z | object | open | Wikipedia List of polygons, polyhedra and polytopes#B98J |
| hemisphere | V5F78RYJBJ | unknown | open | Wikidata Q47091889, MathWorld Hemisphere |
| Hemisphere (geometry) | GMRMQZSF4E | unknown | open | Wikipedia Sphere#Q4T6 |
| Hemisphere model | ZQ7EXDA5BQ | unknown | open | Wikipedia Hyperbolic geometry#WLPE |
| Hemitesseract | ZYNG9FKVNT | object | open | Wikipedia Hemitesseract, Wikidata Q128765580 |
| HEMSMR9SQJ | HEMSMR9SQJ | exercise | open | austin_ula src/exercises/exercises2-2.xml#exercise-13 |
| HEMWTGZX6X | HEMWTGZX6X | 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 2205.09049#9C6P |
| HEMZQ0Y1D0 | HEMZQ0Y1D0 | 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 2311.01874#JYNZ |
| HEN39FR8PT | HEN39FR8PT | 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 2609.38188#3XZ8 |
| Hen3ry | G3T7ZN2TTS | unknown | open | Wikipedia Tom Lehrer#1GJW |
| Henagon | BWGTHCM7N9 | definition | open | Wikipedia List of mathematical shapes#5S1S |
| Hencky strain | A7M5JGN14E | unknown | open | Wikipedia Finite strain theory#R6EI |
| Henda Swart | E6PHBJ5P1P | topic | open | Wikipedia Henda Swart, Wikidata Q19519928 |
| Henda Swart | MKDDP4JZNX | topic | open | Wikipedia List of people by Erdős number#2K0O |
| hendecagon | 7YB5T9NZ73 | definition | open | Wikidata Q214382, MathWorld Hendecagon, Wikipedia Hendecagon |
| Hendecagon | D2BEN0N2G7 | definition | open | Wikipedia List of two-dimensional geometric shapes#W0OK |
| Hendecagon | PHR8W1RJBP | definition | open | Wikipedia List of mathematical shapes#0VIR, Wikipedia List of mathematical shapes#UZ4M, Wikipedia List of polygons, polyhedra and polytopes#NCPJ |
| hendecagonal number | XZ13YTWNKN | object | open | Wikidata Q18450836, OEIS A051682 |
| Hendecagram | 15MT2TREXY | definition | open | Wikipedia List of polygons, polyhedra and polytopes#5TX8 |
| hendecagram | 1QM6N93AFP | definition | open | Wikidata Q3753269, MathWorld Polygram, Wikipedia Hendecagram |
| Hendecagrammic antiprism | KHA87CWE27 | unknown | open | Wikipedia Hendecagrammic prism#OZQJ |
| Hendecagrammic prism | YNRX8AWPJJ | definition | open | Wikipedia Hendecagrammic prism, Wikidata Q17022397 |
| hendecahedron | XMJTH91V09 | object | open | Wikidata Q10904356, MathWorld Undecahedron, Wikipedia Hendecahedron |
| Henderson, Charles Roy | PWHECP627W | topic | open | Wikipedia List of statisticians#NDD1 |
| Hendrickson | FDZW6KFWMR | 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 0909.2893#VOOE |
| Hendrik Bremekamp | 4S8RW5MHQG | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#JT0A |
| Hendrik Casimir | 6QR03VQVX6 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q535748, nLab Hendrik Casimir |
| Hendrik Douwe Kloosterman | SMFGZZE9WF | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#LXO2 |
| Hendrik Kloosterman | 2Z3Q06H5TX | topic | open | Wikipedia Hendrik Kloosterman, Wikidata Q943672 |
| Hendrik Lenstra | 7Y9T9GVW83 | unknown | open | Wikipedia List of people by Erdős number#GQGG |
| Hendrik Lenstra | DNT3RQRRK1 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q173783, nLab Hendrik Lenstra, ProofWiki Mathematician:Hendrik_Willem_Lenstra_Jr. |
| Hendrik Lorentz | 15HCC6K0SJ | unknown | open | Wikipedia List of people by Erdős number#7MNR, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#689X |
| Hendrik Lorentz | 26GHC4FP4C | unknown | open | Wikipedia List of contributors to general relativity#DF7Q |
| Hendrik Lorentz | 6QEZJ9NAY2 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q41688, nLab Hendrik Lorentz, ProofWiki Mathematician:Hendrik_Antoon_Lorentz |
| Hendrik S. Houthakker | P4FDZXBASN | unknown | open | Wikipedia List of fellows of the American Statistical Association#V2CY |
| Hendrik van Heuraet | 8CB87HT39X | topic | open | Wikipedia Hendrik van Heuraet, Wikidata Q2564575 |
| Hendrik Willem Lenstra | MQHKBX3MHT | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#D42S |
| Hendriks, Friedman-Witt | 6K66W3PEKH | 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 2204.04820#CLDV |
| HENJ9BE758 | HENJ9BE758 | 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 2610.05018#B3SF |
| Henk Barendregt | AQM713RSR5 | topic | open | Wikipedia List of logicians#JEQH |
| Henk Barendregt | KGV7N8D795 | topic | open | Wikipedia Henk Barendregt, Wikidata Q1847646 |
| Henk Broer | 4ZD48JXN17 | topic | open | Wikipedia List of people by Erdős number#MGPM |
| Henk Broer | Z02451525R | topic | open | Wikipedia Henk Broer, Wikidata Q15455062 |
| Henk Lombaers | DK6DC7TCC2 | topic | open | Wikipedia Henk Lombaers, Wikidata Q2717865 |
| Henk Tijms | 7N4WGKP8DP | topic | open | Wikipedia Henk Tijms, Wikidata Q1980232 |
| Henk van der Vorst | WMR5AD3V6F | topic | open | Wikipedia Henk van der Vorst, Wikidata Q1975906 |
| Henk Zijm | RF7JG15DMY | topic | open | Wikipedia Henk Zijm, Wikidata Q2420134 |
| Henkaipentacontagon | 5WMW5788QX | unknown | open | Wikipedia List of polygons#UM4W |
| Henkin model | K836G2YGFQ | unknown | open | Wikipedia Second-order logic#45FD |
| Henkin semantics | EH6R718T2J | definition | open | Wikipedia Glossary of logic#YKMP |
| Henkin sentence | 2ZNFRDAF8J | definition | open | Wikipedia Glossary of logic#D9RC |
| Henkin's theorem | 1W0S1FBYH1 | statement | open | Wikipedia Consistency#LS5R |
| Henna Koivusalo | 8J9XZ62DQA | topic | open | Wikipedia Henna Koivusalo, Wikidata Q102411584 |
| Hennadiy Kernes | JYZZEGRWQQ | unknown | open | Wikipedia List of Ukrainian Jews#TYGI |
| Henneberg surface | AJDZVW52X7 | definition | open | Wikipedia List of complex and algebraic surfaces#ML6M |
| Henneberg surface | XRGBXQ9HN1 | definition | open | Wikipedia Henneberg surface, Wikidata Q5714786 |
| Henning Haahr Andersen | B72CB3DGK9 | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#2LKT |
| Henning Haahr Andersen | WQ3E4YB8MF | topic | open | Wikipedia Henning Haahr Andersen, Wikidata Q21004818 |
| Henning Krause | CEADGK7ABQ | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q44374576, nLab Henning Krause |
| Henning Samtleben | 31JF8S6MS9 | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q54323638, nLab Henning Samtleben |
| Henningsen, Inge | 7SJC0M39WC | unknown | open | Wikipedia List of statisticians#FF84 |
| HENPJDAM1J | HENPJDAM1J | exercise | open | lebl_diffyqs ch-laplace.tex#exercise-56 |
| Henri Berestycki | DJ0KNM97H6 | unknown | open | Wikipedia List of people by Erdős number#OD6Y |
| Henri Brinkman | 20747YMX1P | topic | open | Wikipedia Henri Brinkman, Wikidata Q15876219 |
| Henri Brocard | 2WT4D03SM5 | topic | open | Wikipedia Henri Brocard, Wikidata Q572312 |
| Henri Brocard | FPETF5E3S1 | topic | open | Wikipedia List of geometers#96M9 |
| Henri Brocard | VG6A4MBG6N | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#SXT5 |
| Henri Cartan | 5FZMS8AHJF | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q164405, nLab Henri Cartan, Wikipedia Henri Cartan |
| Henri Cartan | 6KWF20QXXE | topic | open | Wikipedia List of publications in mathematics#5OLR |
| Henri Cartan | PH07Z57WJ8 | topic | open | Wikipedia List of people by Erdős number#ND0K, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#3MB1, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#3R71, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#LMGX |
| Henri Cohen | 3QT7TK5A9S | unknown | open | Wikipedia List of people by Erdős number#D1WH, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#6UK8 |