Pith Number

pith:UQ3DQNH2

pith:2013:UQ3DQNH24LTWC26INMLGHR2CEU

not attested not anchored not stored refs pending

Star edge coloring of some classes of graphs

Borut Lu\v{z}ar, Martina Mockov\v{c}iakov\'a, Riste \v{S}krekovski, Roman Sot\'ak, \v{L}udmila Bezegov\'a

arxiv:1307.1242 v1 · 2013-07-04 · 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{UQ3DQNH24LTWC26INMLGHR2CEU}

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	2026-05-18T01:31:21.654967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4363834fae2e7616bc86b1663c7422531ec979ceed143cd68f7407c0d42fd6e

Aliases

arxiv: 1307.1242 · arxiv_version: 1307.1242v1 · doi: 10.48550/arxiv.1307.1242 · pith_short_12: UQ3DQNH24LTW · pith_short_16: UQ3DQNH24LTWC26I · pith_short_8: UQ3DQNH2

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/UQ3DQNH24LTWC26INMLGHR2CEU \
  | 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: a4363834fae2e7616bc86b1663c7422531ec979ceed143cd68f7407c0d42fd6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e01dbcac492979f6e492578d62dd998810a5f06af967a74d14e109ddc13b667e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-07-04T08:50:45Z",
    "title_canon_sha256": "730b17ebc4e70750389f452b6f5bdfd254b9c50d4abcb2bbacad73112366ff49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1242",
    "kind": "arxiv",
    "version": 1
  }
}