Pith Number

pith:7JZXLEHS

pith:2011:7JZXLEHSINFTVPYFOKLTWIUCB3

not attested not anchored not stored refs pending

Obstructions for linear rankwidth at most 1

Andrzej Proskurowski, Arthur M. Farley, Isolde Adler

arxiv:1106.2533 v1 · 2011-06-13 · cs.DM · 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{7JZXLEHSINFTVPYFOKLTWIUCB3}

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	2026-05-18T04:20:05.657848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa737590f2434b3abf0572973b22820ed88c1c594a78f28c7e287589bc324097

Aliases

arxiv: 1106.2533 · arxiv_version: 1106.2533v1 · doi: 10.48550/arxiv.1106.2533 · pith_short_12: 7JZXLEHSINFT · pith_short_16: 7JZXLEHSINFTVPYF · pith_short_8: 7JZXLEHS

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/7JZXLEHSINFTVPYFOKLTWIUCB3 \
  | 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: fa737590f2434b3abf0572973b22820ed88c1c594a78f28c7e287589bc324097

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f88ba3bbcf661d12b3e67fbd7a569f1baae30629f524c27c6cc374d4a6f750fe",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-06-13T19:43:37Z",
    "title_canon_sha256": "3832fe30409eceb9f397cb32cd0a71adf2a0bbfa32ed75b7f312758724329c64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.2533",
    "kind": "arxiv",
    "version": 1
  }
}