Pith Number

pith:7CDF7UM2

pith:2011:7CDF7UM2QUWPNLKTSLWHQHH3R2

not attested not anchored not stored refs pending

An applicative theory for FPH

DM, FCT, Isabel Oitavem (CMAF, Reinhard Kahle (CENTRIA, Universidade de Lisboa, Universidade Nova de Lisboa)

arxiv:1101.5444 v1 · 2011-01-28 · cs.LO · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7CDF7UM2QUWPNLKTSLWHQHH3R2}

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	2026-05-18T04:30:34.974032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8865fd19a852cf6ad5392ec781cfb8e9e521c986ba93282f35978bf8fb15783

Aliases

arxiv: 1101.5444 · arxiv_version: 1101.5444v1 · doi: 10.48550/arxiv.1101.5444 · pith_short_12: 7CDF7UM2QUWP · pith_short_16: 7CDF7UM2QUWPNLKT · pith_short_8: 7CDF7UM2

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/7CDF7UM2QUWPNLKTSLWHQHH3R2 \
  | 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: f8865fd19a852cf6ad5392ec781cfb8e9e521c986ba93282f35978bf8fb15783

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69fae47626113fe5b5a53a1cba441b29e575866b0f9b200ddadce34a4cabe551",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-01-28T04:25:48Z",
    "title_canon_sha256": "74efc6fbcf7ac7bcc3fef7ee84c1f5d8eff9d09103a8fb0cfd5945b1cc25fd2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.5444",
    "kind": "arxiv",
    "version": 1
  }
}