Pith Number

pith:2EVTD6VJ

pith:2016:2EVTD6VJJT5VXTSTAMW52GVA2I

not attested not anchored not stored refs pending

On a Well-behaved Relational Generalisation of Rough Set Approximations

Alexa Gopaulsingh

arxiv:1612.01857 v2 · 2016-12-05 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EVTD6VJJT5VXTSTAMW52GVA2I}

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	2026-05-18T00:55:35.465929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12b31faa94cfb5bce53032ddd1aa0d22d677ba408a82688adf1ea4557c2f2fa

Aliases

arxiv: 1612.01857 · arxiv_version: 1612.01857v2 · doi: 10.48550/arxiv.1612.01857 · pith_short_12: 2EVTD6VJJT5V · pith_short_16: 2EVTD6VJJT5VXTST · pith_short_8: 2EVTD6VJ

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/2EVTD6VJJT5VXTSTAMW52GVA2I \
  | 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: d12b31faa94cfb5bce53032ddd1aa0d22d677ba408a82688adf1ea4557c2f2fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69d72d6b44c60d0c77bedf25a70d99483ced0898c4cd3b3b76d0ad86c1d015cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2016-12-05T08:53:16Z",
    "title_canon_sha256": "32191438857e02c1701cafa3ea8539f583d9b506bb398edfd1ebe6eb46baabfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01857",
    "kind": "arxiv",
    "version": 2
  }
}