Pith Number

pith:OM7PKCVW

pith:2012:OM7PKCVWQI77EBQS7X4OYCKANM

not attested not anchored not stored refs pending

Models for classifying spaces and derived deformation theory

Andrey Lazarev

arxiv:1209.3866 v3 · 2012-09-18 · math.AT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OM7PKCVWQI77EBQS7X4OYCKANM}

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	2026-05-18T03:04:59.699776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

733ef50ab6823ff20612fdf8ec09406b3e5fdcd5e2a48721151b360ad4c61795

Aliases

arxiv: 1209.3866 · arxiv_version: 1209.3866v3 · doi: 10.48550/arxiv.1209.3866 · pith_short_12: OM7PKCVWQI77 · pith_short_16: OM7PKCVWQI77EBQS · pith_short_8: OM7PKCVW

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/OM7PKCVWQI77EBQS7X4OYCKANM \
  | 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: 733ef50ab6823ff20612fdf8ec09406b3e5fdcd5e2a48721151b360ad4c61795

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fc25f2e84e8e91fe74285c4dce2ceafe095bbc38111e0e2f13b1b54b34152b7",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-09-18T08:09:28Z",
    "title_canon_sha256": "19a263d9f73215132cb70a26be0d48ede3420cbfddf564b669c470e23e600320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3866",
    "kind": "arxiv",
    "version": 3
  }
}