Pith Number

pith:CGIK3SPL

pith:2012:CGIK3SPL2GOKUFH5RZP5WUP5UC

not attested not anchored not stored refs pending

Alberti's letter counts

Bernard Ycart (LJK)

arxiv:1210.7137 v1 · 2012-10-26 · math.HO · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CGIK3SPL2GOKUFH5RZP5WUP5UC}

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	2026-05-18T03:12:35.109174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1190adc9ebd19caa14fd8e5fdb51fda0929bdc475bf24491e34aaebc8e9b0cdc

Aliases

arxiv: 1210.7137 · arxiv_version: 1210.7137v1 · doi: 10.48550/arxiv.1210.7137 · pith_short_12: CGIK3SPL2GOK · pith_short_16: CGIK3SPL2GOKUFH5 · pith_short_8: CGIK3SPL

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/CGIK3SPL2GOKUFH5RZP5WUP5UC \
  | 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: 1190adc9ebd19caa14fd8e5fdb51fda0929bdc475bf24491e34aaebc8e9b0cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e55f851b1ddec5580eef421f489a3a74d826fac8fa94ab9cdce11ac38f74b75",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2012-10-26T13:16:30Z",
    "title_canon_sha256": "6abf92ece89564ae795a38c7fbf57357086864651f8e79b588964e9942a807a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7137",
    "kind": "arxiv",
    "version": 1
  }
}