Pith Number

pith:UQQURMDH

pith:2012:UQQURMDHM5USV5EHBDFKXNVJDZ

not attested not anchored not stored refs pending

Proper Resolutions and Gorenstein Categories

Zhaoyong Huang

arxiv:1203.4110 v1 · 2012-03-19 · math.KT · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQQURMDHM5USV5EHBDFKXNVJDZ}

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	2026-05-18T03:59:48.285097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a42148b06767692af48708caabb6a91e684124544d436d9b0fc9b87fa98145ca

Aliases

arxiv: 1203.4110 · arxiv_version: 1203.4110v1 · doi: 10.48550/arxiv.1203.4110 · pith_short_12: UQQURMDHM5US · pith_short_16: UQQURMDHM5USV5EH · pith_short_8: UQQURMDH

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/UQQURMDHM5USV5EHBDFKXNVJDZ \
  | 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: a42148b06767692af48708caabb6a91e684124544d436d9b0fc9b87fa98145ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cf222992f5d5bd5709cb8e2f8e5ed5efe083851541056f07883fd773bd1d78f",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2012-03-19T14:10:07Z",
    "title_canon_sha256": "20655a1b09118755d5f5aca8293fa64a6fe57d0b188280968722688157d34e31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4110",
    "kind": "arxiv",
    "version": 1
  }
}