Pith Number

pith:EWEGPEGR

pith:2013:EWEGPEGRMT4S7Q7XM5SDBFZUDO

not attested not anchored not stored refs pending

On choosability with separation of planar graphs with lists of different sizes

Bernard Lidick\'y, Hal Kierstead

arxiv:1306.5283 v1 · 2013-06-22 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWEGPEGRMT4S7Q7XM5SDBFZUDO}

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	2026-05-18T00:54:58.409701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25886790d164f92fc3f767643097341bae1b54a0642df335a228d3ffd314e7e4

Aliases

arxiv: 1306.5283 · arxiv_version: 1306.5283v1 · doi: 10.48550/arxiv.1306.5283 · pith_short_12: EWEGPEGRMT4S · pith_short_16: EWEGPEGRMT4S7Q7X · pith_short_8: EWEGPEGR

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/EWEGPEGRMT4S7Q7XM5SDBFZUDO \
  | 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: 25886790d164f92fc3f767643097341bae1b54a0642df335a228d3ffd314e7e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e679aa9729d268d9b7eb7ab8cb9942ca7db444def1a8c37c3ec35405c292081b",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-06-22T02:36:14Z",
    "title_canon_sha256": "c9cd7d7987cbdf70049269ed3a897c3fbbf2634b498bee7f6fda33324edf1679"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5283",
    "kind": "arxiv",
    "version": 1
  }
}