Pith Number

pith:K5TGYWBD

pith:2013:K5TGYWBD5CDFSDRP4PED6FY45N

not attested not anchored not stored refs pending

On the dynamic compressibility of sets

Karthik S. Gurumoorthy

arxiv:1302.0487 v1 · 2013-02-03 · cs.CC · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K5TGYWBD5CDFSDRP4PED6FY45N}

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	2026-05-18T03:34:37.019855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57666c5823e886590e2fe3c83f171ceb58f4cad798c6b978b57a917e77cf2807

Aliases

arxiv: 1302.0487 · arxiv_version: 1302.0487v1 · doi: 10.48550/arxiv.1302.0487 · pith_short_12: K5TGYWBD5CDF · pith_short_16: K5TGYWBD5CDFSDRP · pith_short_8: K5TGYWBD

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/K5TGYWBD5CDFSDRP4PED6FY45N \
  | 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: 57666c5823e886590e2fe3c83f171ceb58f4cad798c6b978b57a917e77cf2807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b443e3df1e1578620c20f5aed08ee5b82fb88232e7ee359f8db19e19897e3be2",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-02-03T13:32:24Z",
    "title_canon_sha256": "72586a53e621f1bfd808238924b984a5601fc2aff64c22e3fe2a6abd80299bec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.0487",
    "kind": "arxiv",
    "version": 1
  }
}