Pith Number

pith:7CR3ZQTO

pith:2018:7CR3ZQTOQMSW3DURIFIFAEGMNQ

not attested not anchored not stored refs pending

On the distance matrices of the CP graphs

Jephian C.-H. Lin, Yen-Jen Cheng

arxiv:1805.10269 v1 · 2018-05-25 · 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{7CR3ZQTOQMSW3DURIFIFAEGMNQ}

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	2026-05-18T00:14:57.802075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8a3bcc26e83256d8e9141505010cc6c32193f11933bbee11c38c21b6ca13b46

Aliases

arxiv: 1805.10269 · arxiv_version: 1805.10269v1 · doi: 10.48550/arxiv.1805.10269 · pith_short_12: 7CR3ZQTOQMSW · pith_short_16: 7CR3ZQTOQMSW3DUR · pith_short_8: 7CR3ZQTO

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/7CR3ZQTOQMSW3DURIFIFAEGMNQ \
  | 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: f8a3bcc26e83256d8e9141505010cc6c32193f11933bbee11c38c21b6ca13b46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5353798142bd87f6e4abf18ae77e182532bf891cf93892cb75a62b33f3fb6ee5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-05-25T17:41:05Z",
    "title_canon_sha256": "bd656037f05ca7ef789f74c1b3263cfa360f1132165f36d82c314cbc90127a1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10269",
    "kind": "arxiv",
    "version": 1
  }
}