Pith Number

pith:RQEHQA5M

pith:2023:RQEHQA5MOBXGIQQRTYTN2PZEE4

not attested not anchored not stored refs pending

Digraph Colouring and Arc-Connectivity

Guillaume Aubian, Pierre Aboulker, Pierre Charbit

arxiv:2304.04690 v2 · 2023-04-10 · 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{RQEHQA5MOBXGIQQRTYTN2PZEE4}

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

Coloring digraphs with $\Delta-b$ colors

Receipt and verification

First computed	2026-07-05T06:50:13.825523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c087803ac706e6442119e26dd3f24273ab0ebd6a1fbf96057253ba27a7ef4fb

Aliases

arxiv: 2304.04690 · arxiv_version: 2304.04690v2 · doi: 10.48550/arxiv.2304.04690 · pith_short_12: RQEHQA5MOBXG · pith_short_16: RQEHQA5MOBXGIQQR · pith_short_8: RQEHQA5M

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/RQEHQA5MOBXGIQQRTYTN2PZEE4 \
  | 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: 8c087803ac706e6442119e26dd3f24273ab0ebd6a1fbf96057253ba27a7ef4fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c345ac5b792440ed072513bf933863ba20b66e174554fe4336bdd94df3f6e021",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2023-04-10T16:11:23Z",
    "title_canon_sha256": "5fb61ed95a5e32fe0121fd15c5f7393d6cf45cf03b59cb22a675dd85d97279ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.04690",
    "kind": "arxiv",
    "version": 2
  }
}