Pith Number

pith:72RXTT7N

pith:2012:72RXTT7N5XZBKOGKOVU5DFEKNA

not attested not anchored not stored refs pending

Skinning maps are finite-to-one

David Dumas

arxiv:1203.0273 v2 · 2012-03-01 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{72RXTT7N5XZBKOGKOVU5DFEKNA}

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	2026-05-18T01:37:51.548018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fea379cfededf21538ca7569d1948a681105c590a57d25bc44c044725c7a4554

Aliases

arxiv: 1203.0273 · arxiv_version: 1203.0273v2 · doi: 10.48550/arxiv.1203.0273 · pith_short_12: 72RXTT7N5XZB · pith_short_16: 72RXTT7N5XZBKOGK · pith_short_8: 72RXTT7N

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/72RXTT7N5XZBKOGKOVU5DFEKNA \
  | 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: fea379cfededf21538ca7569d1948a681105c590a57d25bc44c044725c7a4554

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d175f8c5e3722e0e35e54bb72e8e9a38cad2006852145989a1b5964689a18b81",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-03-01T19:27:30Z",
    "title_canon_sha256": "373b5918f345c508f6cf5511b594430a140063843549765e37a8e01518e22be8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0273",
    "kind": "arxiv",
    "version": 2
  }
}