Pith Number

pith:DBJFB6OV

pith:2012:DBJFB6OV6KIX46MXS36YI7Z4AH

not attested not anchored not stored refs pending

On Weak Chromatic Polynomials of Mixed Graphs

Daniel Blado, Joseph Crawford, Matthias Beck, Michael Young, Taina Jean-Louis

arxiv:1210.4634 v2 · 2012-10-17 · 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{DBJFB6OV6KIX46MXS36YI7Z4AH}

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	2026-05-18T01:15:24.423132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

185250f9d5f2917e799796fd847f3c01d1a36e6025ddebe580b3345f114fa35e

Aliases

arxiv: 1210.4634 · arxiv_version: 1210.4634v2 · doi: 10.48550/arxiv.1210.4634 · pith_short_12: DBJFB6OV6KIX · pith_short_16: DBJFB6OV6KIX46MX · pith_short_8: DBJFB6OV

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/DBJFB6OV6KIX46MXS36YI7Z4AH \
  | 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: 185250f9d5f2917e799796fd847f3c01d1a36e6025ddebe580b3345f114fa35e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30ddf82c88b55ceae0c51e82698d6e43ab5cfdc5ca8952e7230de22295acb61a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-10-17T06:16:05Z",
    "title_canon_sha256": "839194b6e48be17d9f196a754339ce119e20a1f5049946a67b1b35939cdce853"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4634",
    "kind": "arxiv",
    "version": 2
  }
}