Inventory rows 69
The cards of the rows of the inventory whose ids start with 69. A card gives the mentions of the item in the sources, and the node of the item when math2 has one.
locally constant function 690EFA5QWV
| URI | m2://inv/690EFA5QWV |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q1762213, locally constant function (unknown). Also nLab locally constant function
History
- 2026-10-26: add by m2/dev
square pyramidal number 693J15EEE6
| URI | m2://inv/693J15EEE6 |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q18949, square pyramidal number (unknown). Also MathWorld SquarePyramidalNumber, OEIS A000330
History
- 2026-10-26: add by m2/dev
Schröder number 698YV9FRVG
| URI | m2://inv/698YV9FRVG |
|---|---|
| Kind | object |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q2071909, Schröder number (object). Also MathWorld SchroederNumber, OEIS A006318
History
- 2026-10-26: add by m2/dev
Dirac equation 69DFTRC74E
| URI | m2://inv/69DFTRC74E |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q272621, Dirac equation (unknown). Also MathWorld DiracEquation, nLab Dirac equation
History
- 2026-10-26: add by m2/dev
tropical semiring 69EECRD657
| URI | m2://inv/69EECRD657 |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q60790098, tropical semiring (unknown). Also nLab tropical semiring
History
- 2026-10-26: add by m2/dev
St. Petersburg paradox 69MZSPK5FG
| URI | m2://inv/69MZSPK5FG |
|---|---|
| Kind | concept |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q874375, St. Petersburg paradox (concept). Also MathWorld SaintPetersburgParadox
History
- 2026-10-26: add by m2/dev
Jensen's inequality (integral version) 69QZQ5T7P0
| URI | m2://inv/69QZQ5T7P0 |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- mathlib_overview: mathlib_overview Analysis > Convexity > Jensen's inequality (integral version), Jensen's inequality (integral version) (unknown). Also Mathlib ConvexOn.map_integral_le
History
- 2026-10-26: add by m2/dev
cone 69TNYMRF72
| URI | m2://inv/69TNYMRF72 |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q493171, cone (unknown). Also MathWorld ConeSet
History
- 2026-10-26: add by m2/dev
vertex enumeration problem 69TPVHWT3Z
| URI | m2://inv/69TPVHWT3Z |
|---|---|
| Kind | problem |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q7922775, vertex enumeration problem (problem). Also MathWorld VertexEnumeration
History
- 2026-10-26: add by m2/dev
Journal of Homotopy and Related Structures 69XEM3EWC6
| URI | m2://inv/69XEM3EWC6 |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | out_of_scope (a book or a journal, not an item of mathematics) |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q15428801, Journal of Homotopy and Related Structures (unknown). Also nLab Journal of Homotopy and Related Structures
History
- 2026-10-26: add by m2/dev
Martin Rees 69XFMB89KD
| URI | m2://inv/69XFMB89KD |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | out_of_scope (a person, not an item of mathematics) |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q335213, Martin Rees (unknown). Also nLab Martin Rees
History
- 2026-10-26: add by m2/dev
halting problem 69Z9SC24HS
| URI | m2://inv/69Z9SC24HS |
|---|---|
| Kind | unknown |
| Layer | textbook |
| Sources | 1 |
| Outcome | open |
| Node | None yet. Write the node. |
Mentions
- wikidata: Wikidata Q622849, halting problem (unknown). Also MathWorld HaltingProblem
History
- 2026-10-26: add by m2/dev