Pith Number

pith:Y4A346OA

pith:2018:Y4A346OAPC2F4OQWFFYQBPGKDY

not attested not anchored not stored refs pending

The polytopal structure of the tight-span of a totally split-decomposable metric

J. Koolen, K. T. Huber, V. Moulton

arxiv:1804.01821 v1 · 2018-04-05 · 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{Y4A346OAPC2F4OQWFFYQBPGKDY}

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	2026-05-18T00:19:09.840672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c701be79c078b45e3a16297100bcca1e2b303823b80da8b1d36fe54ddd14e96a

Aliases

arxiv: 1804.01821 · arxiv_version: 1804.01821v1 · doi: 10.48550/arxiv.1804.01821 · pith_short_12: Y4A346OAPC2F · pith_short_16: Y4A346OAPC2F4OQW · pith_short_8: Y4A346OA

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/Y4A346OAPC2F4OQWFFYQBPGKDY \
  | 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: c701be79c078b45e3a16297100bcca1e2b303823b80da8b1d36fe54ddd14e96a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc1c2fe257e55a946cba4f8b29c6fcb20097daf98b5d1314c65959bbfe859738",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-05T13:06:32Z",
    "title_canon_sha256": "ba563a746cf9a9dd7422e2b587badde8558465488c67c332ae0602abbeb16242"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01821",
    "kind": "arxiv",
    "version": 1
  }
}