Pith Number

pith:25IFMF2P

pith:2015:25IFMF2PQTO3LCZIZR463WZ47R

not attested not anchored not stored refs pending

Fast domino tileability

Adam Sheffer, Igor Pak, Martin Tassy

arxiv:1507.00770 v2 · 2015-07-02 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{25IFMF2PQTO3LCZIZR463WZ47R}

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	2026-05-18T01:00:12.783261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d75056174f84ddb58b28cc79eddb3cfc551aaaf3c1ae985d3a4436c9fe23aa56

Aliases

arxiv: 1507.00770 · arxiv_version: 1507.00770v2 · doi: 10.48550/arxiv.1507.00770 · pith_short_12: 25IFMF2PQTO3 · pith_short_16: 25IFMF2PQTO3LCZI · pith_short_8: 25IFMF2P

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/25IFMF2PQTO3LCZIZR463WZ47R \
  | 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: d75056174f84ddb58b28cc79eddb3cfc551aaaf3c1ae985d3a4436c9fe23aa56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f20b2e46875c9eb96ddbde3ff7869816d82306e908e72151a9e553ef7bd327c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-02T21:31:54Z",
    "title_canon_sha256": "c9759e67ec09a32685b1235ce41b68db62970663560e74e20f2f66f06797927b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00770",
    "kind": "arxiv",
    "version": 2
  }
}