| Cross-sectional study | GQS1EJASC1 | definition | open | Wikipedia List of psychological research methods#PO19 |
| Cross-sectional study | XN6RDX937J | definition | open | Wikipedia List of statistics articles#VP4G |
| Cross-sequential study | H2HN7M6D08 | definition | open | Wikipedia List of psychological research methods#C44Y |
| Cross-sequential study | S95H3A1TQE | definition | open | Wikipedia Cross-sequential study, Wikidata Q5188198 |
| Cross-species transmission | NTB7GT6J4X | definition | open | Wikipedia Cross-species transmission, Wikidata Q16000070 |
| Cross-spectrum | 6TYTA06SK3 | definition | open | Wikipedia List of statistics articles#4J6R |
| Cross-spectrum | YE3EYVZ505 | definition | open | Wikipedia Cross-spectrum, Wikidata Q5188201 |
| Cross-stitch curve | 3YVF9NMGWX | unknown | open | Wikipedia Koch snowflake#RXTJ |
| Cross-term sign | WA024T87G1 | 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 2609.38243#0HUG |
| Cross-Validation | 6Z3R20WMNV | 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 2610.10167#VGDD |
| Cross-validation | CVWPQ4F6QR | definition | open | Wikipedia Cross-validation (statistics), Wikidata Q541014 |
| Cross-validation (statistics) | FY067MYH70 | definition | open | Wikipedia List of statistics articles#FOBK |
| Crossbar theorem | M587MHH12S | statement | open | Wikipedia List of theorems#2L2Z |
| Crossbar theorem | T3V4VQ393A | statement | open | mathlib_1000 Q5188510, Wikidata Q5188510, thousand_plus Q5188510, Wikipedia Crossbar theorem |
| Crosscap number | PYDKXTHJB8 | definition | open | Wikipedia List of knot theory topics#0WCK |
| Crosscap number | RG6SF58K1J | definition | open | Wikipedia Crosscap number, Wikidata Q5188519 |
| Crossed convergence on a discrete space | DCN9R81FPF | example | 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 2609.20514#E62L |
| Crossed hexagonal antiprism | 95BKYVCA30 | unknown | open | Wikipedia Hexagonal antiprism#JHPD |
| Crossed homomorphism | CDQ6PEG4SK | unknown | open | Wikipedia Group cohomology#DOMX |
| crossed ladders problem | MWPX74TAE4 | problem | open | Wikidata Q4183835, MathWorld CrossedLaddersProblem |
| crossed module | WEE620EQNN | definition | open | Wikidata Q5188565, EoM Crossed_module, nLab crossed module, Wikipedia Crossed module |
| Crossed pentagonal antiprism | AYH70BF5B0 | unknown | open | Wikipedia Pentagonal antiprism#9DCT |
| Crossed pentagonal cuploid | T1XJ988W5D | unknown | open | Wikipedia Cupola (geometry)#YHI6 |
| Crossed polygon | R84ZT7591F | definition | open | Wikipedia Crossed polygon, Wikidata Q107570655 |
| Crossed prism | HYCHS7PSZQ | unknown | open | Wikipedia Prism (geometry)#SG1T |
| Crossed product | CAKCFD4G9P | definition | open | Wikidata Q3406705, Wikipedia Crossed product |
| Crossed products by discrete groups | FEBVGGTHPZ | example | 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 2609.27518#AK4Y |
| Crossed products by endomorphisms | K0KWJ0ZST4 | example | 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 2609.27518#0ZFI |
| Crossed products by endomorphisms with hereditary range | QF1A4FTGMH | example | 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 2609.27518#4MSC |
| Crossed products by transfer operators of finite type | V7ZXAYEM9J | example | 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 2609.27518#424N |
| Crossed quadrilateral | DCE5F6A73M | unknown | open | Wikipedia Quadrilateral#13JE |
| Crossed quadrilateral | XF08N3R3YF | definition | open | Wikipedia List of self-intersecting polygons#BU8X |
| Crossed rectangle | RRZ09EAKTW | unknown | open | Wikipedia Rectangle#79E6 |
| Crossed square antiprism | 5KDEN37DTX | unknown | open | Wikipedia Square antiprism#CAH1 |
| Crossed-sequence criterion | R1SES6W42K | 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 2609.20514#GM3L |
| Crossing | 5TA3E6Q2GH | 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 2609.38220#HJ70 |
| Crossing | SJ0HJKGD04 | 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 math/0003117#COMW |
| Crossing (knot theory) | P2430XBGG2 | unknown | open | Wikipedia Knot theory#T5BW |
| Crossing an annulus with small local times | 9PSX2YMP15 | 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 2610.12138#M5O7 |
| Crossing changes and slice-torus link invariants | YMVDV5Z9F9 | 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 2610.10206#X1PE |
| Crossing depth | DE6B1NJJQ4 | 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 2609.37368#Y7OZ |
| Crossing lemma | A1JCSAKQ1X | statement | open | Wikipedia List of lemmas#J95E |
| Crossing lemma | BKZX2ACP9D | 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#LX9P |
| Crossing number | FVW9HTTVB2 | definition | open | Wikipedia List of knot theory topics#GLN5 |
| crossing number | HEVBJBFJAS | definition | open | Wikidata Q266775, MathWorld GraphCrossingNumber, Wikipedia Crossing number (graph theory) |
| Crossing number | PTQAEQ8NVH | definition | open | Wikipedia Crossing number (knot theory), Wikidata Q2548661 |
| crossing number | XSCS1S8FRG | definition | open | Wikipedia List of unsolved problems in mathematics#437G |
| Crossing number inequality | EA03WT01AF | statement | open | Wikipedia Crossing number inequality, Wikidata Q24896206 |
| Crossing number inequality | V97RCMBCSS | statement | open | Wikipedia List of probabilistic proofs of non-probabilistic theorems#MH7X |
| Crossing Numbers of Graphs | Q5GGGR780C | definition | open | Wikipedia Crossing Numbers of Graphs, Wikidata Q96375696 |
| Crossing sequence | BZEXGM13EW | definition | open | Wikipedia Crossing sequence (Turing machines), Wikidata Q5188666 |
| Crossing to smaller strata | 9JKZXB2044 | 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 2610.22326#LQBD |
| Crossing-Support Theorem | QEXAJ05DD8 | 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 2609.22465#AC9K |
| Crossings | FZEZQ7R4V6 | 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 2610.18512#AM3C |
| Crossover study | 2R2762YY64 | definition | open | Wikipedia Crossover study, Wikidata Q1242899 |
| Crossover study | 3EEQKPDPVN | definition | open | Wikipedia List of statistics articles#6M5Z |
| Crout matrix decomposition | BV1SSYCERC | definition | open | Wikidata Q15924432, MathWorld CroutsMethod, Wikipedia Crout matrix decomposition |
| Crouzeix's conjecture | K7QTD2C2Q4 | statement | open | Wikipedia Crouzeix's conjecture, Wikidata Q65074161 |
| Crouzeix's conjecture | X8X0KTA3VK | statement | open | Wikipedia List of unsolved problems in mathematics#ATS3 |
| Crowd counting | SJBKZW7K0P | definition | open | Wikipedia Crowd counting, Wikidata Q2990819 |
| Crowdsourced psychological science | YVKBXPVQDX | definition | open | Wikipedia Crowdsourced psychological science, Wikidata Q96375700 |
| crown graph | ES07NQ4PMV | definition | open | Wikidata Q3115466, MathWorld CrownGraph, Wikipedia Crown graph |
| Crown polyhedron | 806ZXQ9EN8 | unknown | open | Wikipedia Toroidal polyhedron#0L4J |
| CRPEHC6NRM | CRPEHC6NRM | 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 2610.13137#FQUK |
| CRPZY8Q7VJ | CRPZY8Q7VJ | example | open | napkin tex/calculus/differentiate.tex#example-1 |
| CRQ6SKGRJQ | CRQ6SKGRJQ | 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 2609.33406#5S9T |
| CRQDQ829WQ | CRQDQ829WQ | exercise | open | napkin tex/H113/ring-intro.tex#ques-2 |
| CRQFEGAPC4 | CRQFEGAPC4 | 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 2610.09926#0Z6F |
| CRQG9KR5FR | CRQG9KR5FR | 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 2610.16339#CQGW |
| CRQQRP9346 | CRQQRP9346 | example | 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 2610.20368#LB14 |
| CRRKAJ4ZKR | CRRKAJ4ZKR | 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 2609.21900#DD1J |
| CRSWGNXSXW | CRSWGNXSXW | 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 math/0406514#A548 |
| CRT | 8068AKG50F | definition | open | Wikipedia Glossary of set theory#9OXA |
| CRT decomposition of the centralizer; original | B54BH6SJPQ | 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 2610.02392#VT1P |
| CRT for polynomial rings | ZZ4NZDPA8J | 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 2610.06312#G0UP |
| CRT zero-count for $\mathcal Q(p,2)$; original | SHQQH18R50 | 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 2610.02392#CBPN |
| CRT4HHQR0W | CRT4HHQR0W | 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 1902.04230#NCFS |
| CRT80RX3ZY | CRT80RX3ZY | 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 2610.05459#M542 |
| CRTNFNFNBA | CRTNFNFNBA | 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 2609.28848#AKSR |
| CRTSEEF9N6 | CRTSEEF9N6 | 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#NSIN |
| Cruciform curve | 4GXFF5M5TR | unknown | open | Wikipedia Plane quartic curve#4YD3 |
| Cruciform curve | 8AD9VZMS19 | definition | open | Wikipedia List of mathematical shapes#AC3B, Wikipedia List of curves#80ZV |
| cruciform curve | TB6WGYDJXJ | definition | open | Wikidata Q18368730, MathWorld Cruciform, ProofWiki Definition:Cruciform_Curve |
| Crude competitor bound | 94BX1ZTM0D | 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 2610.02219#11HG |
| Crumpled cube | SJ025CST94 | definition | open | Wikipedia Crumpled cube, Wikidata Q5190073 |
| Crumpling | FSA8FQ10A2 | definition | open | Wikipedia Crumpling, Wikidata Q29017879 |
| crunode | ATQGE9KYNY | definition | open | Wikipedia Glossary of classical algebraic geometry#VJTG |
| crunode | CPWTMT5652 | definition | open | Wikidata Q3890126, MathWorld Crunode, Wikipedia Crunode |
| Crunode | SFPMV0TEWA | definition | open | Wikipedia List of curves topics#41T5 |
| Crutchfield situation | G76HBJX393 | definition | open | Wikipedia Crutchfield situation, Wikidata Q25339783 |
| Crux Mathematicorum | 9Y6GR94SKJ | definition | open | Wikipedia Crux Mathematicorum, Wikidata Q15760338 |
| Cruzer Enterprise | 3C1Z4FJFZ3 | definition | open | Wikipedia Cruzer Enterprise, Wikidata Q5190347 |
| CRV14PDZ7K | CRV14PDZ7K | 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 2609.35325#VVUB |
| CRVG0Q42K1 | CRVG0Q42K1 | 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 2609.40123#69QM |
| CRVQ4CBDZC | CRVQ4CBDZC | 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 2609.20588#ZD1V |
| CRVSTPCJFD | CRVSTPCJFD | 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 2610.21872#BMKN |
| CRVVHTR7BK | CRVVHTR7BK | 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 2604.02255#L39L |
| CRY1JFWV42 | CRY1JFWV42 | 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 2609.36423#M9TW |
| CRYA3PJGDY | CRYA3PJGDY | 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 2610.20421#6VCB |
| Crypt | 79ESYSZVG3 | definition | open | Wikipedia Crypt (C), Wikidata Q15995009 |