Pith Number

pith:5JJOHCU6

pith:2018:5JJOHCU67RWKPN3EY3JOPJPNGV

not attested not anchored not stored refs pending

On Quadratic Embedding Constants of Star Product Graphs

Nobuaki Obata, Wojciech M{\l}otkowski

arxiv:1802.01214 v1 · 2018-02-04 · 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{5JJOHCU67RWKPN3EY3JOPJPNGV}

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	2026-05-18T00:24:27.038429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea52e38a9efc6ca7b764c6d2e7a5ed3563dc3a5c421b8fe4ac821d31fe97e02b

Aliases

arxiv: 1802.01214 · arxiv_version: 1802.01214v1 · doi: 10.48550/arxiv.1802.01214 · pith_short_12: 5JJOHCU67RWK · pith_short_16: 5JJOHCU67RWKPN3E · pith_short_8: 5JJOHCU6

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/5JJOHCU67RWKPN3EY3JOPJPNGV \
  | 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: ea52e38a9efc6ca7b764c6d2e7a5ed3563dc3a5c421b8fe4ac821d31fe97e02b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52bc2cfe4bd1707abdc25cc17dd683bd8892a07f270b26e863d0d91da9eb26d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-02-04T22:43:23Z",
    "title_canon_sha256": "b4b444ef030eef7935f39af808629fff77145aa530207f218ac7306e4bb42562"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01214",
    "kind": "arxiv",
    "version": 1
  }
}