Pith Number

pith:7WMIOE2A

pith:2013:7WMIOE2ACZ7ERLOS7H426T7SR5

not attested not anchored not stored refs pending

On the reduction of the CSP dichotomy conjecture to digraphs

Dejan Delic, Jakub Bulin, Marcel Jackson, Todd Niven

arxiv:1305.2039 v2 · 2013-05-09 · cs.CC · 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{7WMIOE2ACZ7ERLOS7H426T7SR5}

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	2026-05-18T03:16:51.001663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd98871340167e48add2f9f9af4ff28f74e221800d912ceaca4d244d0528a9a3

Aliases

arxiv: 1305.2039 · arxiv_version: 1305.2039v2 · doi: 10.48550/arxiv.1305.2039 · pith_short_12: 7WMIOE2ACZ7E · pith_short_16: 7WMIOE2ACZ7ERLOS · pith_short_8: 7WMIOE2A

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/7WMIOE2ACZ7ERLOS7H426T7SR5 \
  | 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: fd98871340167e48add2f9f9af4ff28f74e221800d912ceaca4d244d0528a9a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abd4a80f89e2cef530d75bfe54095d741acb0acd1d528bcf13288095f2faf86a",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-05-09T09:12:52Z",
    "title_canon_sha256": "55c02a2379874741373d8a2fa8ba0c816080ad5149d68bfb314e6c21446ac438"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2039",
    "kind": "arxiv",
    "version": 2
  }
}