Pith Number

pith:RUKEYKSJ

pith:2014:RUKEYKSJPCIKP732PVACEZXA2E

not attested not anchored not stored refs pending

Bicategorical homotopy pullbacks

A. M. Cegarra, B. A. Heredia, J. Remedios

arxiv:1404.2715 v1 · 2014-04-10 · math.CT · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUKEYKSJPCIKP732PVACEZXA2E}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:54:28.698340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d144c2a497890a7ff7a7d402266e0d10db00ddb81a8e42e0373fb31f235fddb

Aliases

arxiv: 1404.2715 · arxiv_version: 1404.2715v1 · doi: 10.48550/arxiv.1404.2715 · pith_short_12: RUKEYKSJPCIK · pith_short_16: RUKEYKSJPCIKP732 · pith_short_8: RUKEYKSJ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RUKEYKSJPCIKP732PVACEZXA2E \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8d144c2a497890a7ff7a7d402266e0d10db00ddb81a8e42e0373fb31f235fddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d55398ead3fdd733c329367d2aa38f40b0c7ddb8d36329c79edadb73952532dc",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2014-04-10T07:32:22Z",
    "title_canon_sha256": "4678a7af16ae6eed9ea195480087b647c5be42d529ffcadb70be298d3859c9e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2715",
    "kind": "arxiv",
    "version": 1
  }
}