Pith Number

pith:I4AHZXWY

pith:2017:I4AHZXWYGNBPUFQKAVVNOC23IC

not attested not anchored not stored refs pending

Twins and Vertex- Identification on Graphs

Simon Schmidt, Souad Slimani, Sylvain Gravier

arxiv:1708.03121 v1 · 2017-08-10 · 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{I4AHZXWYGNBPUFQKAVVNOC23IC}

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	2026-05-18T00:38:14.711277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47007cded83342fa160a056ad70b5b40badbc10e53749f6349b8d6e8f3821ddb

Aliases

arxiv: 1708.03121 · arxiv_version: 1708.03121v1 · doi: 10.48550/arxiv.1708.03121 · pith_short_12: I4AHZXWYGNBP · pith_short_16: I4AHZXWYGNBPUFQK · pith_short_8: I4AHZXWY

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/I4AHZXWYGNBPUFQKAVVNOC23IC \
  | 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: 47007cded83342fa160a056ad70b5b40badbc10e53749f6349b8d6e8f3821ddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c87bcdd3bdfb069ef6b45b56514acccb5f44911fe82c25b007443208b2800991",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-08-10T08:31:27Z",
    "title_canon_sha256": "a79b112ec8aec52db61cec4b0ddbd9c5ef65d93078b4a226eb743e597341a4ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.03121",
    "kind": "arxiv",
    "version": 1
  }
}