Pith Number

pith:3Q2DBNVA

pith:2017:3Q2DBNVAARPL3IXEXOKMWJNGJR

not attested not anchored not stored refs pending

Eigenvalue location in graphs of small clique-width

Carlos Hoppen, David P. Jacobs, Martin F\"urer, Vilmar Trevisan

arxiv:1710.09510 v1 · 2017-10-26 · 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{3Q2DBNVAARPL3IXEXOKMWJNGJR}

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	2026-05-18T00:31:59.226672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc3430b6a0045ebda2e4bb94cb25a64c5f1543180162024c264660fe9d5e6065

Aliases

arxiv: 1710.09510 · arxiv_version: 1710.09510v1 · doi: 10.48550/arxiv.1710.09510 · pith_short_12: 3Q2DBNVAARPL · pith_short_16: 3Q2DBNVAARPL3IXE · pith_short_8: 3Q2DBNVA

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/3Q2DBNVAARPL3IXEXOKMWJNGJR \
  | 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: dc3430b6a0045ebda2e4bb94cb25a64c5f1543180162024c264660fe9d5e6065

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9a0701a7590e4892317e119d13f4fd204f515dd25c8c9376527b617840bff0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-10-26T01:53:30Z",
    "title_canon_sha256": "2de82dc6c84d3a5892aeb103dde8960987aeedb306a681bca56fdbe6c299c03e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09510",
    "kind": "arxiv",
    "version": 1
  }
}