Pith Number

pith:FPJEUCPP

pith:2018:FPJEUCPPM7IW4OSQRY2JB73PBS

not attested not anchored not stored refs pending

On DP-Coloring of Digraphs

J{\o}rgen Bang-Jensen, Michael Stiebitz, Thomas Bellitto, Thomas Schweser

arxiv:1812.09684 v1 · 2018-12-23 · 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{FPJEUCPPM7IW4OSQRY2JB73PBS}

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	2026-05-17T23:57:27.117723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bd24a09ef67d16e3a508e3490ff6f0c9d16642caafe3840d9c6dc00ebaee78f

Aliases

arxiv: 1812.09684 · arxiv_version: 1812.09684v1 · doi: 10.48550/arxiv.1812.09684 · pith_short_12: FPJEUCPPM7IW · pith_short_16: FPJEUCPPM7IW4OSQ · pith_short_8: FPJEUCPP

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/FPJEUCPPM7IW4OSQRY2JB73PBS \
  | 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: 2bd24a09ef67d16e3a508e3490ff6f0c9d16642caafe3840d9c6dc00ebaee78f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "455ef8b86ae44876679435e07ec077313a9bf532808c9e89dd0b91e35fd61f2d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-12-23T10:18:49Z",
    "title_canon_sha256": "2f93669bdfec4ce8e1d0331d6831c0fabc9746e02f0df9e4310a60bfed62a519"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.09684",
    "kind": "arxiv",
    "version": 1
  }
}