Pith Number

pith:EVP7L3P4

pith:2013:EVP7L3P4ID2XJ5GAEMNAUKFFEX

not attested not anchored not stored refs pending

There is no finite-variable equational axiomatization of representable relation algebras over weakly representable relation algebras

Jeremy F. Alm, Robin Hirsch, Roger D. Maddux

arxiv:1310.5076 v6 · 2013-10-18 · math.LO · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EVP7L3P4ID2XJ5GAEMNAUKFFEX}

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	2026-05-17T23:53:15.021117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

255ff5edfc40f574f4c0231a0a28a525cb273812b1e06818a2761adc8dd8490c

Aliases

arxiv: 1310.5076 · arxiv_version: 1310.5076v6 · doi: 10.48550/arxiv.1310.5076 · pith_short_12: EVP7L3P4ID2X · pith_short_16: EVP7L3P4ID2XJ5GA · pith_short_8: EVP7L3P4

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/EVP7L3P4ID2XJ5GAEMNAUKFFEX \
  | 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: 255ff5edfc40f574f4c0231a0a28a525cb273812b1e06818a2761adc8dd8490c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b10f3b29eed5c14e4a7a1fa4b2c8e5107915295b7725df1534115af7af63606",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-10-18T16:09:16Z",
    "title_canon_sha256": "25aac2be2f077eede9e543402e35e5e3d03c7dbc06f4fcb292cf037d1401913a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.5076",
    "kind": "arxiv",
    "version": 6
  }
}