Pith Number

pith:OY3GRIWF

pith:2012:OY3GRIWF4X6T7HCVHISI73SNFL

not attested not anchored not stored refs pending

Higher dimensional analogues of the map colouring problem

Basudeb Datta, Bhaskar Bagchi

arxiv:1202.0153 v1 · 2012-02-01 · math.CO · cs.CG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OY3GRIWF4X6T7HCVHISI73SNFL}

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	2026-05-18T04:03:20.010993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

763668a2c5e5fd3f9c553a248fee4d2ae2db8eb9847ee093f92c45e1e381c05b

Aliases

arxiv: 1202.0153 · arxiv_version: 1202.0153v1 · doi: 10.48550/arxiv.1202.0153 · pith_short_12: OY3GRIWF4X6T · pith_short_16: OY3GRIWF4X6T7HCV · pith_short_8: OY3GRIWF

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/OY3GRIWF4X6T7HCVHISI73SNFL \
  | 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: 763668a2c5e5fd3f9c553a248fee4d2ae2db8eb9847ee093f92c45e1e381c05b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f25cb15f6ed3d9a009d9a4e29c140ec4509159d51c395a98e30444255ff68e0",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-01T11:48:35Z",
    "title_canon_sha256": "8e55554a90fe3234db0bd97970a675e817c2dfe6cb65bd16ac9802407986219e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.0153",
    "kind": "arxiv",
    "version": 1
  }
}