Pith Number

pith:WONGIOEU

pith:2016:WONGIOEUNIUPXDVBH7VYXGGGPH

not attested not anchored not stored refs pending

Signed graphs with two negative edges

Eckhard Steffen, Edita Rollov\'a, Michael Schubert

arxiv:1604.08053 v1 · 2016-04-27 · 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{WONGIOEUNIUPXDVBH7VYXGGGPH}

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	2026-05-18T01:16:08.298421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b39a6438946a28fb8ea13feb8b98c679f9f14fb7ffcbc4fc8b048b7988928b66

Aliases

arxiv: 1604.08053 · arxiv_version: 1604.08053v1 · doi: 10.48550/arxiv.1604.08053 · pith_short_12: WONGIOEUNIUP · pith_short_16: WONGIOEUNIUPXDVB · pith_short_8: WONGIOEU

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/WONGIOEUNIUPXDVBH7VYXGGGPH \
  | 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: b39a6438946a28fb8ea13feb8b98c679f9f14fb7ffcbc4fc8b048b7988928b66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7feb78fb1fa0bda70abb4e6f322db096a9f4e04c69bf8c89e1b4321e42a29c1a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-04-27T13:07:57Z",
    "title_canon_sha256": "c21fe01093052681db5fffc838ff892e32db4e477241b8879617efb48bd1d2be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08053",
    "kind": "arxiv",
    "version": 1
  }
}