Pith Number

pith:EAJAAMWT

pith:2017:EAJAAMWTWWK2VVDYDY3ZWEB5NK

not attested not anchored not stored refs pending

Islands in minor-closed classes. I. Bounded treewidth and separators

Sergey Norin, Zden\v{e}k Dvo\v{r}\'ak

arxiv:1710.02727 v1 · 2017-10-07 · 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{EAJAAMWTWWK2VVDYDY3ZWEB5NK}

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.

Cited by

1 paper in Pith

3-Colouring Planar Graphs

Receipt and verification

First computed	2026-05-18T00:33:29.016557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20120032d3b595aad4781e379b103d6a82bcb4457ea14226372f4138883bc78f

Aliases

arxiv: 1710.02727 · arxiv_version: 1710.02727v1 · doi: 10.48550/arxiv.1710.02727 · pith_short_12: EAJAAMWTWWK2 · pith_short_16: EAJAAMWTWWK2VVDY · pith_short_8: EAJAAMWT

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/EAJAAMWTWWK2VVDYDY3ZWEB5NK \
  | 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: 20120032d3b595aad4781e379b103d6a82bcb4457ea14226372f4138883bc78f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25f0164fce909b223148ca4765bbc0d54e9cb013697eb31a0e8133871ac3c8c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-10-07T19:23:01Z",
    "title_canon_sha256": "c1fed1358f795068fe45c72b014eae5ba4dd9714e38214538de94a068093b7ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.02727",
    "kind": "arxiv",
    "version": 1
  }
}