Pith Number

pith:JCG4RE4Y

pith:2016:JCG4RE4YWFGXC5WOXKVXF2WHOA

not attested not anchored not stored refs pending

Schrijver graphs and projective quadrangulations

Mat\v{e}j Stehl\'ik, Tom\'a\v{s} Kaiser

arxiv:1604.01582 v1 · 2016-04-06 · 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{JCG4RE4YWFGXC5WOXKVXF2WHOA}

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	2026-05-18T00:13:08.104887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

488dc89398b14d7176cebaab72eac77008472ac9106087ba93a749bc7072b325

Aliases

arxiv: 1604.01582 · arxiv_version: 1604.01582v1 · doi: 10.48550/arxiv.1604.01582 · pith_short_12: JCG4RE4YWFGX · pith_short_16: JCG4RE4YWFGXC5WO · pith_short_8: JCG4RE4Y

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/JCG4RE4YWFGXC5WOXKVXF2WHOA \
  | 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: 488dc89398b14d7176cebaab72eac77008472ac9106087ba93a749bc7072b325

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7e62cefbe783d6f8429ffa9c6461a78708ef41d1d34e5203b46d0ef3e337b6d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-04-06T12:01:30Z",
    "title_canon_sha256": "c54a08a4011095a4620530ecfa9cbfa89127ec9c3ed63b89b7940bd21b5405c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01582",
    "kind": "arxiv",
    "version": 1
  }
}