Pith Number

pith:2VENPSMJ

pith:2011:2VENPSMJFSIWK3WVSROUV3MDN6

not attested not anchored not stored refs pending

Polyhedral results for the Equitable Coloring Problem

Daniel Severin, Graciela Nasini, Isabel M\'endez-D\'iaz

arxiv:1106.3349 v1 · 2011-06-16 · 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{2VENPSMJFSIWK3WVSROUV3MDN6}

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	2026-05-18T02:51:06.790551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d548d7c9892c91656ed5945d4aed836f8e6840756813a2e5dfea5d3799577d65

Aliases

arxiv: 1106.3349 · arxiv_version: 1106.3349v1 · doi: 10.48550/arxiv.1106.3349 · pith_short_12: 2VENPSMJFSIW · pith_short_16: 2VENPSMJFSIWK3WV · pith_short_8: 2VENPSMJ

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/2VENPSMJFSIWK3WVSROUV3MDN6 \
  | 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: d548d7c9892c91656ed5945d4aed836f8e6840756813a2e5dfea5d3799577d65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aac230f78ba9b95860d77e396e873e12f15ece3e23b6e4034404cb2c5c0d2d86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-06-16T21:01:43Z",
    "title_canon_sha256": "b942b7f36aca580239aa442cf3489c4ad93257d6e65c6aa2893790160c73dab2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3349",
    "kind": "arxiv",
    "version": 1
  }
}