Pith Number

pith:E6N4HZZF

pith:2017:E6N4HZZFLA54K5GDXR7U4S4KH5

not attested not anchored not stored refs pending

On vertex types of graphs

Pu Qiao, Xingzhi Zhan

arxiv:1705.09540 v1 · 2017-05-26 · 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{E6N4HZZFLA54K5GDXR7U4S4KH5}

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	2026-05-18T00:43:38.419259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

279bc3e725583bc574c3bc7f4e4b8a3f6549a9dea1b508d335651606078b8c12

Aliases

arxiv: 1705.09540 · arxiv_version: 1705.09540v1 · doi: 10.48550/arxiv.1705.09540 · pith_short_12: E6N4HZZFLA54 · pith_short_16: E6N4HZZFLA54K5GD · pith_short_8: E6N4HZZF

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/E6N4HZZFLA54K5GDXR7U4S4KH5 \
  | 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: 279bc3e725583bc574c3bc7f4e4b8a3f6549a9dea1b508d335651606078b8c12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7582d6d30d481a2c6c9c36d13bd77491a16baa861b8ffc92095bf46476b7521",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-05-26T11:43:21Z",
    "title_canon_sha256": "b1b19c9ab7c8ab8d85c816035a9a12549ef51616516b71ccf3685f65472aef5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.09540",
    "kind": "arxiv",
    "version": 1
  }
}