Pith Number

pith:CQSYPU6G

pith:2011:CQSYPU6GJ56JKD4LWBVOTTOALJ

not attested not anchored not stored refs pending

Semiregularity via derived deformation theory

J. P. Pridham

arxiv:1112.6001 v4 · 2011-12-27 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQSYPU6GJ56JKD4LWBVOTTOALJ}

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	2026-05-18T03:48:45.039657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

142587d3c64f7c950f8bb06ae9cdc05a7565d480f1b189adf6acf7cae7d69fb9

Aliases

arxiv: 1112.6001 · arxiv_version: 1112.6001v4 · doi: 10.48550/arxiv.1112.6001 · pith_short_12: CQSYPU6GJ56J · pith_short_16: CQSYPU6GJ56JKD4L · pith_short_8: CQSYPU6G

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/CQSYPU6GJ56JKD4LWBVOTTOALJ \
  | 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: 142587d3c64f7c950f8bb06ae9cdc05a7565d480f1b189adf6acf7cae7d69fb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28d87cc2b521872a9de581340c366db4bde7635c640bb1d81941094dd31990e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-12-27T18:40:56Z",
    "title_canon_sha256": "49c3b8e5c4003de96fff074537299b7b75fab1265568d40055802fdbace45d0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.6001",
    "kind": "arxiv",
    "version": 4
  }
}