Pith Number

pith:GWGNODJC

pith:2015:GWGNODJCQCFMBUH2FSWJMVCYAL

not attested not anchored not stored refs pending

Fixpoint Node Selection Query Languages for Trees

Diego Calvanese, Giuseppe De Giacomo, Maurizio Lenzerini, Moshe Y. Vardi

arxiv:1509.08979 v3 · 2015-09-30 · cs.DB · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GWGNODJCQCFMBUH2FSWJMVCYAL}

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	2026-05-18T00:00:45.499464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

358cd70d22808ac0d0fa2cac96545802f0748489a300b0ff35ddf99e84ee4f5f

Aliases

arxiv: 1509.08979 · arxiv_version: 1509.08979v3 · doi: 10.48550/arxiv.1509.08979 · pith_short_12: GWGNODJCQCFM · pith_short_16: GWGNODJCQCFMBUH2 · pith_short_8: GWGNODJC

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/GWGNODJCQCFMBUH2FSWJMVCYAL \
  | 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: 358cd70d22808ac0d0fa2cac96545802f0748489a300b0ff35ddf99e84ee4f5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b475363e35a3264e5f227cb875de9e880ce41d8e507a4df5e2b6c0852d281eb",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2015-09-30T00:12:55Z",
    "title_canon_sha256": "d59c987e4a7f2df5f0204e09bd6bfb7e4b29da5bac882513baa1d86b620ac9bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08979",
    "kind": "arxiv",
    "version": 3
  }
}