Pith Number

pith:K6TULCGT

pith:2019:K6TULCGTJ3TDBLDIJPKYGH7VDQ

not attested not anchored not stored refs pending

Piece selection and cardinal arithmetic

Pierre Matet

arxiv:1908.04375 v1 · 2019-08-12 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K6TULCGTJ3TDBLDIJPKYGH7VDQ}

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	2026-07-04T23:54:30.205082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57a74588d34ee630ac684bd5831ff51c3da550d0e7c3307776e14c2c5b460ce1

Aliases

arxiv: 1908.04375 · arxiv_version: 1908.04375v1 · doi: 10.48550/arxiv.1908.04375 · pith_short_12: K6TULCGTJ3TD · pith_short_16: K6TULCGTJ3TDBLDI · pith_short_8: K6TULCGT

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/K6TULCGTJ3TDBLDIJPKYGH7VDQ \
  | 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: 57a74588d34ee630ac684bd5831ff51c3da550d0e7c3307776e14c2c5b460ce1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc3fc308cab9896d36d3ae589678c4be0bb008cafea66998abc246d57be5e98b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-08-12T20:46:00Z",
    "title_canon_sha256": "20944b3b71b0e9adf6a22cb87a6aa9026b662c8796d8aa465f0f65fdf8550199"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04375",
    "kind": "arxiv",
    "version": 1
  }
}