Wikimedia neighborhood · Wikidata observation Observed Graph-projection

Ludolph van Ceulen

German-Dutch mathematician (*1540 – †1610)

Provider: Wikidata. These recorded connections are observations, not Counterpedia claims. They do not establish source support.

Data and provenance

Provider: Wikidata · Entity ID: Q310771

Release: sha256:f33228901a35b0683356002a46df9ceb11f399d05f17abb5c7c78256cbf38ba7

Graph membership is not truth. Each relation below is an observed typed edge the local Wikimedia graph bundle already materialized — not a corroborated, verified, or admitted claim. Bounded to 40 relations via an offset-index lookup (offset_index_binary_search), never a full scan of the bundle.Serving a published subset: joined entities + 1-hop neighborhood of 35,994 exact Wikipedia–Wikidata title matches. A subject that is not itself in that subset carries only the relations the subset recorded for it, so a small count here is the published scope and not a complete relationship inventory.

Development requests are not available on this deployment. The observed entity and its graph links remain readable.

1-hop relations (40+)

Observed adjacency only. Each spoke is a typed edge already materialized in the graph, labeled by its recorded predicate — graph proximity is not support, corroboration, or admission. The links below are the accessible, no-JavaScript path to the same neighbors.

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Grouped by a fixed presentation taxonomy for legibility only. The grouping asserts no rank, truth, support, or standing — every observed edge is carried, none reordered by importance.

Identity & relations (7)

→ sex or gender (P21)maleObserved
Relationship details
Provider: Wikidata · Property: P21 · Direction: outgoing · Entity ID: Q6581097
→ instance of (P31)humanObserved
Relationship details
Provider: Wikidata · Property: P31 · Direction: outgoing · Entity ID: Q5
→ family name (P734)CeulenObserved
Relationship details
Provider: Wikidata · Property: P734 · Direction: outgoing · Entity ID: Q65769127
→ spouse (P26)Adriana van CeulenObserved
Relationship details
Provider: Wikidata · Property: P26 · Direction: outgoing · Entity ID: Q94733526
→ given name (P735)LudolfObserved
Relationship details
Provider: Wikidata · Property: P735 · Direction: outgoing · Entity ID: Q507605
→ given name (P735)LudolphObserved
Relationship details
Provider: Wikidata · Property: P735 · Direction: outgoing · Entity ID: Q21146208
← spouse (P26)Adriana van CeulenObserved
Relationship details
Provider: Wikidata · Property: P26 · Direction: incoming · Entity ID: Q94733526

Dates & events (2)

→ date of death (P570)1610Observed
Relationship details
Provider: Wikidata · Property: P570 · Direction: outgoing
→ date of death (P570)31 December 1610Observed
Relationship details
Provider: Wikidata · Property: P570 · Direction: outgoing

Occupation & roles (8)

→ field of work (P101)mathematical constantObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q186509
→ occupation (P106)fencerObserved
Relationship details
Provider: Wikidata · Property: P106 · Direction: outgoing · Entity ID: Q13381863
→ field of work (P101)diskObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q238231
→ field of work (P101)mathematicsObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q395
→ occupation (P106)mathematicianObserved
Relationship details
Provider: Wikidata · Property: P106 · Direction: outgoing · Entity ID: Q170790
→ field of work (P101)fencingObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q12100
→ field of work (P101)calculationObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q622821
→ field of work (P101)piObserved
Relationship details
Provider: Wikidata · Property: P101 · Direction: outgoing · Entity ID: Q167

Places (1)

→ place of death (P20)LeidenObserved
Relationship details
Provider: Wikidata · Property: P20 · Direction: outgoing · Entity ID: Q43631

Other connections (21)

→ described by source (P1343)BEIC Digital LibraryObserved
Relationship details
Provider: Wikidata · Property: P1343 · Direction: outgoing · Entity ID: Q51955019
→ work location (P937)LeidenObserved
Relationship details
Provider: Wikidata · Property: P937 · Direction: outgoing · Entity ID: Q43631
→ described by source (P1343)Brockhaus and Efron Encyclopedic DictionaryObserved
Relationship details
Provider: Wikidata · Property: P1343 · Direction: outgoing · Entity ID: Q602358
→ Relationship name unavailable (P641)fencingObserved
Relationship details
Provider: Wikidata · Property: P641 · Direction: outgoing · Entity ID: Q12100
→ Relationship name unavailable (P185)Frans van SchootenObserved
Relationship details
Provider: Wikidata · Property: P185 · Direction: outgoing · Entity ID: Q21259693
→ described by source (P1343)Allgemeine Deutsche BiographieObserved
Relationship details
Provider: Wikidata · Property: P1343 · Direction: outgoing · Entity ID: Q590208
→ Relationship name unavailable (P1299)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P1299 · Direction: outgoing · Entity ID: Q83500987
→ Relationship name unavailable (P185)Willebrord SnelliusObserved
Relationship details
Provider: Wikidata · Property: P185 · Direction: outgoing · Entity ID: Q244152
→ Relationship name unavailable (P1559)Ludolphus A. Collen (de)Observed
Relationship details
Provider: Wikidata · Property: P1559 · Direction: outgoing
→ Relationship name unavailable (P1412)DutchObserved
Relationship details
Provider: Wikidata · Property: P1412 · Direction: outgoing · Entity ID: Q7411
→ Relationship name unavailable (P1412)GermanObserved
Relationship details
Provider: Wikidata · Property: P1412 · Direction: outgoing · Entity ID: Q188
→ described by source (P1343)Nordisk familjebokObserved
Relationship details
Provider: Wikidata · Property: P1343 · Direction: outgoing · Entity ID: Q678259
← Relationship name unavailable (P180)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P180 · Direction: incoming · Entity ID: Q83500999
← Relationship name unavailable (P184)Frans van SchootenObserved
Relationship details
Provider: Wikidata · Property: P184 · Direction: incoming · Entity ID: Q21259693
← main subject (P921)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P921 · Direction: incoming · Entity ID: Q83500994
← named after (P138)piObserved
Relationship details
Provider: Wikidata · Property: P138 · Direction: incoming · Entity ID: Q167
← Relationship name unavailable (P180)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P180 · Direction: incoming · Entity ID: Q83500987
← Relationship name unavailable (P180)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P180 · Direction: incoming · Entity ID: Q83500994
← main subject (P921)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P921 · Direction: incoming · Entity ID: Q83500987
← main subject (P921)Unnamed subjectObserved
Relationship details
Provider: Wikidata · Property: P921 · Direction: incoming · Entity ID: Q83500999
← Relationship name unavailable (P184)Willebrord SnelliusObserved
Relationship details
Provider: Wikidata · Property: P184 · Direction: incoming · Entity ID: Q244152

External identifiers (1)

→ image (P18)Portret van Ludolph van Ceulen, RP-P-OB-15.347.jpgObserved
Relationship details
Provider: Wikidata · Property: P18 · Direction: outgoing

More relations exist beyond this bounded panel's cap of 40. This panel intentionally shows a small neighborhood, not the full graph.

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