| Horner scheme | 66586TR89B | definition | open | Wikipedia List of polynomial topics#RWYO |
| Horner's method | 9Z894BAB04 | definition | open | Wikidata Q944658, MathWorld HornersMethod, MathWorld HornersRule, ProofWiki Definition:Horner's_Rule, Wikipedia Horner's method |
| Horng-Tzer Yau | 3KFKHEE5AG | topic | open | Wikipedia List of Taiwanese mathematicians#1AQT |
| Horng-Tzer Yau | DMRDMBYPRW | topic | open | Wikipedia Horng-Tzer Yau, Wikidata Q1628464 |
| Horng-Tzer Yau | QCQMG28SXV | topic | open | Wikipedia List of people by Erdős number#6IAZ, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#W63E |
| Horocone limit for general radial laws | 45PE7HRJJH | 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 2609.27752#4INE |
| horocycle | 3RTYDCAEMY | definition | open | Wikidata Q2246795, MathWorld Horocycle, Wikipedia Horocycle |
| Horocycle | MR3VF0RQC0 | definition | open | Wikipedia List of mathematical shapes#J2S9 |
| Horocycle flow | YVTS1HMTF6 | unknown | open | Wikipedia Horocycle#Q2VG |
| Horocycle-based coordinate system | MAYAAW7NR2 | unknown | open | Wikipedia Coordinate systems for the hyperbolic plane#ANSO |
| Horologium Oscillatorium | 7NC4MGC58V | definition | out_of_scope (a book, not an item of mathematics) | Wikidata Q17055395, ProofWiki Book:Christiaan_Huygens/Horologium_Oscillatorium_sive_de_Motu_Pendularium, Wikipedia Horologium Oscillatorium |
| Horopter | JEQ6ZKXFA8 | unknown | open | Wikipedia List of mathematical shapes#GT6S, Wikipedia List of curves#HJG9 |
| Horosphere | T9XC8923YY | definition | open | Wikipedia List of topologies#DNFV |
| Horosphere | YR5C3B81WT | definition | open | Wikipedia Horosphere, Wikidata Q1053743 |
| Horospherical geodesic rough density | EA3PD39XQ3 | 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 2009.11127#PMN8 |
| Horrocks bundle | KWSPEWV2TE | definition | open | Wikipedia Horrocks bundle, Wikidata Q5905122 |
| Horrocks construction | PTHEHDSQM5 | definition | open | Wikipedia Horrocks construction, Wikidata Q16994110 |
| Horrocks–Mumford bundle | SRJ15BYM5Z | definition | open | Wikipedia Horrocks–Mumford bundle, Wikidata Q5905129 |
| Horrocks–Mumford bundle | YWDEHX1YAB | definition | open | Wikipedia List of complex and algebraic surfaces#XF0F |
| Horror vacui | BF959Q26AX | unknown | open | Wikipedia List of superseded scientific theories#PRRB |
| Horsengoggle | FE45M4D58B | definition | open | Wikipedia Horsengoggle, Wikidata Q17038852 |
| Horseshoe | 242XG0RX7T | definition | open | Wikipedia Horseshoe (symbol), Wikidata Q5905943 |
| horseshoe lemma | MPNFX36GP0 | statement | open | Wikidata Q5906080, MathWorld HorseshoeLemma, nLab horseshoe lemma, Wikipedia Horseshoe lemma |
| Horseshoe lemma | XZF651NFGW | statement | open | Wikipedia List of lemmas#5HUI |
| Horseshoe map | 2KC3CBH1SM | definition | open | Wikipedia List of dynamical systems and differential equations topics#X6G2 |
| horseshoe map | WJJQHEMH8Y | definition | open | Wikidata Q557781, MathWorld SmaleHorseshoeMap, Wikipedia Horseshoe map |
| Horst Feistel | 84JGVP53ZY | topic | open | Wikipedia Horst Feistel, Wikidata Q62164 |
| Horst Feistel | CR6RMVJV8R | topic | open | Wikipedia List of cryptographers#UAUH |
| Horst Herrlich | 73MDFVZES0 | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#JU0C |
| Horst Herrlich | SFPBQ88WVC | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q20180377, nLab Horst Herrlich, Wikipedia Horst Herrlich |
| Horst Knörrer | 2S74X7JQ2F | topic | open | Wikipedia Horst Knörrer, Wikidata Q103737 |
| Horst Sachs | 1PMJEEFGMC | topic | open | Wikipedia List of people by Erdős number#9208 |
| Horst Sachs | WBR3GW444Q | topic | open | Wikipedia Horst Sachs, Wikidata Q78039 |
| Horst Schubert | 4Q4GMQJC5E | topic | open | Wikipedia List of German mathematicians#3NOL |
| Horst Schubert | EQ7JAQ097B | topic | open | Wikipedia Horst Schubert, Wikidata Q1253487 |
| Hortensia Galeana Sánchez | 66H3JC1H12 | topic | open | Wikipedia Hortensia Galeana Sánchez, Wikidata Q28816129 |
| Hortensia Soto | D77464S77N | topic | open | Wikipedia Hortensia Soto, Wikidata Q104747470 |
| Horton 92-graph | 2GFRMK2C50 | unknown | open | Wikidata Q2818688, House of Graphs 1179 |
| Horton 96-graph | 8R61TQM6EM | definition | open | Wikidata Q3115508, House of Graphs 1181, Wikipedia Horton graph |
| Horton graphs | 8WK1ZQGECF | concept | open | Wikidata Q78088914, MathWorld HortonGraphs |
| Horton principle | P8YEY5JNE8 | statement | open | Wikipedia Horton principle, Wikidata Q17081407 |
| Horvitz–Thompson estimator | G72SRYRTJW | definition | open | Wikipedia Horvitz–Thompson estimator, Wikidata Q17027597 |
| Horvitz–Thompson estimator | YK8B14YWQ7 | definition | open | Wikipedia List of statistics articles#K32W |
| Hosaka plot | A13JQ7J61G | definition | open | Wikipedia Hosaka plot, Wikidata Q16861287 |
| Hoshen–Kopelman algorithm | PRDSPXZZ6M | definition | open | Wikipedia Hoshen–Kopelman algorithm, Wikidata Q2835787 |
| Hosmer–Lemeshow test | K5T0CV2XYE | definition | open | Wikipedia Hosmer–Lemeshow test, Wikidata Q5908162 |
| Hosmer–Lemeshow test | S2AYW6RM1K | definition | open | Wikipedia List of statistics articles#EY6F |
| Hosohedron | 9PDCQY1RQW | object | open | Wikipedia List of mathematical shapes#8XLT, Wikipedia List of mathematical shapes#BR3L, Wikipedia List of mathematical shapes#DESH |
| hosohedron | DMMY8FDT6C | object | open | Wikidata Q869874, MathWorld Hosohedron, nLab hosohedron, Wikipedia Hosohedron |
| Hosohedron | GZHYDABV42 | object | open | Wikipedia List of isotoxal polyhedra and tilings#2OVE |
| Hosotope | 73F7BMX3Z3 | unknown | open | Wikipedia Hosohedron#03OQ |
| Hosotope | FMYC24JV4N | object | open | Wikipedia List of mathematical shapes#EBUP |
| Hosoya index | 5GP2QY6FBS | definition | open | Wikidata Q4200699, MathWorld HosoyaIndex, Wikipedia Hosoya index |
| Hosoya's triangle | 7NCA83B2SX | definition | open | Wikipedia Hosoya's triangle, Wikidata Q17027607 |
| Hospital resident | K50PB0FYPZ | unknown | open | Wikipedia National Resident Matching Program#OVC1 |
| Hossein Zakeri | 1Q1Q5JPDJK | topic | open | Wikipedia Hossein Zakeri, Wikidata Q16106148 |
| host signal | WP62GX8P4Q | definition | open | Wikipedia Digital watermarking#3L76, Wikipedia Digital watermarking#9TZN |
| Hostile attribution bias | Z2E2KWQEY4 | unknown | open | Wikipedia List of cognitive biases#L5FF |
| HOSVD-based canonical form of TP functions and qLPV models | X0VE3CBJBG | definition | open | Wikipedia HOSVD-based canonical form of TP functions and qLPV models, Wikidata Q17098043 |
| Hot-cold empathy gap | AHT2EZY0XH | unknown | open | Wikipedia List of cognitive biases#LX5S |
| Hot-hand fallacy | G1G7J36SK2 | unknown | open | Wikipedia List of cognitive biases#EYOV |
| Hotaru Beam | 2ZXT6SY4TD | definition | open | Wikipedia Hotaru Beam, Wikidata Q14405896 |
| Hotelling's law | 8X2KSV1NS4 | statement | open | Wikipedia Hotelling's law, Wikidata Q1631149 |
| Hotelling's lemma | HQ8E58E6ER | statement | open | Wikipedia Hotelling's lemma, Wikidata Q139965 |
| Hotelling's lemma | YX88JY4J81 | statement | open | Wikipedia List of lemmas#YXR6 |
| Hotelling's rule | VZT200QVZA | definition | open | Wikipedia Hotelling's rule, Wikidata Q443972 |
| Hotelling's T-squared distribution | 4A0MYPBJHW | concept | open | Wikidata Q1393230, EoM Hotelling-T%5E2-distribution, MathWorld HotellingT-SquaredDistribution, Wikipedia Hotelling's T-squared distribution |
| Hotelling's T-squared distribution | JBWGNJRX3P | definition | open | Wikipedia List of statistics articles#88NH, Wikipedia List of probability distributions#JZKV |
| Hotelling's two-sample T-squared statistic | YYCCCJ00WY | unknown | open | Wikipedia Hotelling's T-squared distribution#AZHT |
| Hotelling, Harold | 572XWM8718 | topic | open | Wikipedia List of statisticians#MAWK |
| HoTT Book | DQ2TP1Q7TR | unknown | open | Wikipedia Homotopy type theory#5T9P |
| Hough transform | DJ6457CDM5 | definition | open | Wikipedia List of transforms#DJ35 |
| Hough transform | ESAV9NYZ6D | definition | open | Wikidata Q195076, MathWorld HoughTransform, Wikipedia Hough transform |
| Houman Owhadi | TEC22DG619 | topic | open | Wikipedia Houman Owhadi, Wikidata Q59673287 |
| hour | JYMN1VQ9VK | definition | open | Wikidata Q25235, ProofWiki Definition:Time/Unit/Hour |
| Hour angle | 6XFRVQCQRK | definition | open | Wikipedia Hour angle, Wikidata Q734439 |
| Hourya Benis Sinaceur | FQJ13SYVGD | topic | open | Wikipedia Hourya Benis Sinaceur, Wikidata Q5913483 |
| house graph | GM9PTXXNQJ | unknown | open | Wikidata Q3115585, House of Graphs 1183, MathWorld HouseGraph |
| House with two rooms | 5CSDRSAB3V | definition | open | Wikipedia List of topologies#IFDI |
| House with two rooms | ZN0Q5RW9HE | definition | open | Wikipedia House with two rooms, Wikidata Q16902428 |
| house X-graph | NQYRFQ5BB9 | unknown | open | Wikidata Q130551131, House of Graphs 788 |
| Householder matrix | JB1GWEFEQW | concept | open | Wikidata Q43217907, MathWorld HouseholderMatrix |
| Householder transformation | F16V6XZ5CN | definition | open | Wikipedia Householder transformation, Wikidata Q304490 |
| Householder's method | E4JXGST5J5 | definition | open | Wikidata Q1631446, MathWorld HouseholdersMethod, Wikipedia Householder's method |
| Housing affordability in anglophone countries | H2GZ969T3H | definition | open | Wikipedia Housing affordability in anglophone countries, Wikidata Q105393916 |
| How Data Happened | B23YCXFS88 | definition | open | Wikipedia How Data Happened, Wikidata Q118142359 |
| How Long Is the Coast of Britain | RV316PGNCX | unknown | open | Wikipedia Coastline paradox#W6PH |
| How many sightings before adding an instruction | XJRZXWKN80 | 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 2610.11007#02YQ |
| How many unit distances | 627M5YM3A8 | definition | open | Wikipedia List of unsolved problems in mathematics#1XCK |
| How Much Can We Boost IQ and Scholastic Achievement? | V3WGW8AD2Q | definition | open | Wikipedia How Much Can We Boost IQ and Scholastic Achievement?, Wikidata Q5918000 |
| How Not to Be Wrong | 54K1V1WB2A | definition | open | Wikipedia List of mathematics books#7W62 |
| How Not to Be Wrong | W6N4RAH3KA | definition | out_of_scope (a book, not an item of mathematics) | Wikidata Q26966309, ProofWiki Book:Jordan_Ellenberg/How_Not_to_be_Wrong, Wikipedia How Not to Be Wrong |
| How Round Is Your Circle? | K233KM7JTY | definition | open | Wikipedia How Round Is Your Circle?, Wikidata Q97182021 |
| How the ridge advances the small direction | 14RSGACBSF | 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 2610.14695#GA6N |
| How to find the reduction formula | B48KX9BVP1 | statement | open | Wikipedia Integration by reduction formulae#OTD1 |
| How to Lie with Statistics | 5SW5R078ZS | definition | open | Wikipedia How to Lie with Statistics, Wikidata Q3854758 |
| How to Lie with Statistics | EDW2JR1A91 | definition | open | Wikipedia List of statistics articles#E60L |
| How to Read Numbers | 5NW5K348RR | definition | open | Wikipedia How to Read Numbers, Wikidata Q124683331 |
| How to Solve It | GGEKRQBR34 | definition | out_of_scope (a book, not an item of mathematics) | Wikidata Q4119391, ProofWiki Book:G._Polya/How_To_Solve_It, Wikipedia How to Solve It |
| How to Think Like a Mathematician | CE2MXQ9BS0 | definition | open | Wikipedia How to Think Like a Mathematician, Wikidata Q124304177 |