Pith Number

pith:YPFAQCTA

pith:2014:YPFAQCTAF6BYOAMVNPI3S5WMBB

not attested not anchored not stored refs pending

Right $n$-angulated categories arising from covariantly finite subcategories

Zengqiang Lin

arxiv:1409.2948 v1 · 2014-09-10 · math.CT · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPFAQCTAF6BYOAMVNPI3S5WMBB}

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	2026-05-18T02:43:08.678791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3ca080a602f838701956bd1b976cc085880d986df94b776037a91bdddf31f5b

Aliases

arxiv: 1409.2948 · arxiv_version: 1409.2948v1 · doi: 10.48550/arxiv.1409.2948 · pith_short_12: YPFAQCTAF6BY · pith_short_16: YPFAQCTAF6BYOAMV · pith_short_8: YPFAQCTA

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/YPFAQCTAF6BYOAMVNPI3S5WMBB \
  | 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: c3ca080a602f838701956bd1b976cc085880d986df94b776037a91bdddf31f5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47b7544b3ddaafeca729279536571f106d248761f59bc65ee923361d5530b4ab",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2014-09-10T03:41:03Z",
    "title_canon_sha256": "e1c760e28c4d2214ca9df3f0472f9c0c61a91b3cb3ad917733496aa3791f45dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2948",
    "kind": "arxiv",
    "version": 1
  }
}