| K | 9EJNC6Z7BC | definition | open | Wikipedia Glossary of graph theory#TNBU |
| K formulas | FFH5BAYVHG | statement | open | Wikipedia Jacobi elliptic functions#UZF9 |
| K q-flats | B4E0SJ9NNK | definition | open | Wikipedia K q-flats, Wikidata Q6343029 |
| K shortest path routing | 8Y6TY5E1VP | definition | open | Wikipedia K shortest path routing, Wikidata Q6343044 |
| k times continuously differentiable function | NQNSQ16REA | unknown | open | Wikidata Q11855366, MathWorld C-kFunction |
| K-anonymity | RP1KTJMDRP | definition | open | Wikipedia K-anonymity, Wikidata Q17061432 |
| k-ary | VNVNYJX3QC | definition | open | Wikipedia Glossary of graph theory#4H89 |
| K-ary Huffman coding | W5PY2BX4SP | unknown | open | Wikipedia Huffman coding#ITT2 |
| k-Chinese postman | 1METR7V7T9 | problem | open | Wikipedia List of NP-complete problems#E481 |
| K-convex function | YWER7M9DWS | definition | open | Wikipedia K-convex function, Wikidata Q25111447 |
| K-convexity in Rn | HSMPS8HK1J | definition | open | Wikipedia K-convexity in Rn, Wikidata Q118900172 |
| K-d tree | D693TJM982 | unknown | open | Wikipedia List of computer graphics and descriptive geometry topics#9064 |
| K-distribution | SXH3P43HTD | definition | open | Wikipedia K-distribution, Wikidata Q6322815 |
| K-distribution | ZP4MPE9YX9 | definition | open | Wikipedia List of statistics articles#EPUN |
| k-edge-connected graph | WR0VJX2BY6 | definition | open | Wikidata Q3034655, MathWorld k-Edge-ConnectedGraph, Wikipedia Edge connectivity |
| K-epsilon turbulence model | ZFQ0KY4B9S | definition | open | Wikipedia K-epsilon turbulence model, Wikidata Q17148242 |
| K-equivalence | PYVPG8SH4K | definition | open | Wikipedia K-equivalence, Wikidata Q6322819 |
| k-factor | BVW19RCJG0 | unknown | open | Wikidata Q130377973, MathWorld k-Factor |
| K-finite | E2RGWFFVPK | definition | open | Wikipedia Glossary of representation theory#UMZN |
| K-finite | QCXT2VTTMS | definition | open | Wikipedia K-finite, Wikidata Q6322832 |
| K-fold cross-validation | 8HMT8S54WC | unknown | open | Wikipedia Cross-validation (statistics)#TUFP |
| K-frame | 5REF6JGD31 | definition | open | Wikipedia K-frame, Wikidata Q6322834 |
| K-function | S5RWS2GQFG | definition | open | Wikipedia List of mathematical functions#NZ5S |
| K-function | TTYKG638VN | definition | open | Wikidata Q1541649, MathWorld K-Function, Wikipedia K-function |
| K-graph C*-algebra | GDABPA6GMQ | definition | open | Wikipedia K-graph C*-algebra, Wikidata Q16155468 |
| K-groups of a field | QZG5V7WTS8 | definition | open | Wikipedia K-groups of a field, Wikidata Q85772689 |
| K-homology | A13X7CKT37 | definition | open | Wikidata Q6322838, nLab K-homology, Wikipedia K-homology |
| K-homology | KHMR7XMPJR | definition | open | Wikipedia Glossary of areas of mathematics#M66U |
| k-invariant | RNGFERS3F2 | definition | open | Wikipedia Glossary of algebraic topology#Q68A |
| K-linked graph | M97TA68WJV | unknown | open | Wikipedia Vertex connectivity#GEN3 |
| K-matrix | KHM159V1BX | concept | open | Wikidata Q110571086, MathWorld k-Matrix |
| K-means algorithm | EGVQJAHCYB | definition | open | Wikipedia List of statistics articles#LUQ4 |
| K-means clustering | N9NYY5WP74 | definition | open | Wikipedia K-means clustering, Wikidata Q310401 |
| K-means++ | 2DKZBFX3VF | definition | open | Wikipedia K-means++, Wikidata Q13414807 |
| K-means++ | Y3RXM06V8J | definition | open | Wikipedia List of statistics articles#TGKE |
| K-medians clustering | 8XS3XVPRTD | definition | open | Wikipedia K-medians clustering, Wikidata Q4041956 |
| K-medians clustering | BM0PWYSPQH | definition | open | Wikipedia List of statistics articles#2VXD |
| K-medoids | E0F9AXB99V | definition | open | Wikipedia K-medoids, Wikidata Q3191282 |
| K-medoids | WK2AAQT204 | definition | open | Wikipedia List of statistics articles#VYZL |
| K-mer | AXHCBP2YP5 | definition | open | Wikipedia K-mer, Wikidata Q6322851 |
| K-minimum spanning tree | 3V7QSX3A3M | definition | open | Wikipedia K-minimum spanning tree, Wikidata Q6322849 |
| K-nearest neighbors | R77TEM9F1D | definition | open | Wikipedia List of algorithms#Y4LZ |
| K-nearest neighbors algorithm | C0QCSHVCBG | definition | open | Wikipedia K-nearest neighbors algorithm, Wikidata Q1071612 |
| K-NN regression | 91YRMS3M1T | unknown | open | Wikipedia K-nearest neighbors algorithm#WTJ4 |
| K-noid | QRTVYN07VS | definition | open | Wikipedia K-noid, Wikidata Q6322853 |
| k-permutation | D5S53MCFSN | concept | open | levin_dmoi index/2.3/k-permutation |
| K-Poincaré algebra | S35DF4NRTS | definition | open | Wikipedia K-Poincaré algebra, Wikidata Q6322740 |
| K-Poincaré group | 4RGTC3CQA7 | definition | open | Wikipedia K-Poincaré group, Wikidata Q6322742 |
| K-regular sequence | 6AKHQKW16A | definition | open | Wikipedia K-regular sequence, Wikidata Q25304877 |
| K-semistabilities | E39Q32MAY0 | definition | 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 2610.05179#SNVS |
| K-server problem | VC24VH3XWH | conjecture | open | Wikipedia K-server problem, Wikidata Q6322866 |
| K-set | TJ5CBZKTAS | definition | open | Wikipedia K-set (geometry), Wikidata Q6322868 |
| k-sets | NVHTJ9Z3EH | definition | open | Wikipedia List of unsolved problems in mathematics#LCGK |
| K-space | KZCK7MEQPD | definition | open | Wikipedia K-space (functional analysis), Wikidata Q18386386 |
| K-stability | ZTBVFH9K10 | definition | open | Wikipedia K-stability, Wikidata Q85772692 |
| K-stability of Fano varieties | MMG2Q9M6T4 | definition | open | Wikipedia K-stability of Fano varieties, Wikidata Q111955952 |
| K-statistic | 392X2J7ARH | definition | open | Wikidata Q16860715, MathWorld k-Statistic, Wikipedia K-statistic |
| K-statistic | GT50TNTM9P | definition | open | Wikipedia List of statistics articles#C4YQ |
| k-subset | P2VHADN6KG | unknown | open | Wikidata Q141500538, MathWorld k-Subset |
| K-SVD | CS9W2E7R5Z | definition | open | Wikipedia K-SVD, Wikidata Q17098361 |
| k-SVD algorithm | 9QXTJ7JTJJ | definition | open | Wikipedia K-SVD#U5LE |
| K-synchronized sequence | G8TAQF4S3K | definition | open | Wikipedia K-synchronized sequence, Wikidata Q48996052 |
| K-theory | 5GTTW3QFE1 | definition | open | Wikipedia Glossary of arithmetic and diophantine geometry#KBX7 |
| K-theory | 93GP8P4KEQ | definition | open | Wikipedia K-theory (physics), Wikidata Q17098372 |
| K-theory | B29Y5NAENC | topic | open | Wikipedia List of algebraic topology topics#KP7U |
| K-theory | DE3HEZZM59 | definition | open | Wikipedia Glossary of areas of mathematics#VICK |
| K-theory | TJ88BB7PT7 | topic | open | Wikidata Q15615154, MathWorld K-Theory, nLab K-theory, ProofWiki Definition:K-Theory, Wikipedia K-theory |
| K-theory (physics) | Q39BX3BN24 | definition | open | Wikipedia List of string theory topics#P14V |
| K-theory of a category | Z3BVYV7CZW | definition | open | Wikipedia K-theory of a category, Wikidata Q85772696 |
| K-theory spectrum | R87165X8VD | definition | open | Wikidata Q16909784, nLab K-theory spectrum, Wikipedia K-theory spectrum |
| K-topology | SJ4SHBAR7J | definition | open | Wikidata Q6322883, nLab K-topology, Wikipedia K-topology |
| K-topology | XPET4RZG34 | definition | open | Wikipedia List of topologies#IB0L |
| K-transform | D1Z6NQWB8A | definition | open | Wikipedia K-transform, Wikidata Q105833767 |
| k-tree | 4RGSSFMQG3 | definition | open | Wikidata Q12027616, MathWorld k-Tree, Wikipedia K-tree |
| K-trivial set | NCNXTFAYQW | definition | open | Wikipedia K-trivial set, Wikidata Q15958734 |
| k-vertex-connected graph | TQ3H4STQ80 | unknown | open | Wikidata Q3115621, MathWorld k-ConnectedGraph |
| K-way merge algorithm | 8DCZD14AX4 | unknown | open | Wikipedia List of algorithms#X74R |
| K. Ananda Rau | 24XKF3M6B4 | topic | open | Wikipedia K. Ananda Rau, Wikidata Q11115439 |
| K. B. Reid | BPFNAVXTQE | unknown | open | Wikipedia List of people by Erdős number#HNBH |
| K. C. Sreedharan Pillai | 6NB0S9M0G3 | unknown | open | Wikipedia List of fellows of the American Statistical Association#WHLL |
| K. David Elworthy | 5FYQP9CZDC | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#8MXN |
| K. G. Ramanathan | ENJH8N6KHJ | topic | open | Wikipedia List of people by Erdős number#ISNK |
| K. G. Ramanathan | W7D4QAG8NN | topic | open | Wikipedia K. G. Ramanathan, Wikidata Q10965844 |
| K. Iwasawa | K6SHVA35PP | unknown | open | Wikipedia List of group theory topics#A197 |
| K. Patrick Okura | H2P4TXMB4W | unknown | open | Wikipedia List of University of California, Los Angeles people#SHOH |
| K. R. Parthasarathy | FDTYNR8E8H | unknown | open | Wikipedia List of Indian mathematicians#HIU6, Wikipedia List of mathematical probabilists#ODRT |
| K. R. Parthasarathy (probabilist) | PHQ701NMXH | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#WEQD |
| K. Ruben Gabriel | N6H7K6E3V2 | topic | open | Wikipedia K. Ruben Gabriel, Wikidata Q17309048 |
| K. Ruben Gabriel | XMMSQKN06P | topic | open | Wikipedia List of fellows of the American Statistical Association#TMP1 |
| K. S. Amur | Z7Y28E3W6F | topic | open | Wikipedia K. S. Amur, Wikidata Q6323914 |
| K. S. Chandrasekharan | PNN9GX6QBK | topic | open | Wikipedia List of people by Erdős number#B9CL, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#LYUG |
| K. S. Chandrasekharan | YKJECQT4XT | topic | open | Wikipedia K. S. Chandrasekharan, Wikidata Q1718182 |
| K. S. Narain | F19SZKGZMV | unknown | open | Wikipedia List of string theory topics#HG6M |
| K. S. S. Nambooripad | XX96PQPDHF | topic | open | Wikipedia List of Indian mathematicians#1SWL |
| K. S. S. Nambooripad | XZBRVFCYJQ | topic | open | Wikipedia K. S. S. Nambooripad, Wikidata Q6323973 |
| K. S. Virbhadra | FRPMF99W1J | unknown | open | Wikipedia List of contributors to general relativity#0PZC |
| K. Sandeep | 7REXS2K23X | topic | open | Wikipedia K. Sandeep, Wikidata Q22121190 |
| K/k | VSJJME4HAN | unknown | out_of_scope (a notation: the notation register holds it (corpus spec K10.4)) | Wikidata Q9922, ProofWiki Symbols:K |
| K00BRGQK35 | K00BRGQK35 | 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 2610.14154#KUA6 |
| K00BS3GAJ8 | K00BS3GAJ8 | 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 2609.24307#E3U5 |