Pith Number

pith:P7PPGT3E

pith:2015:P7PPGT3E2MJ654PQHBZ5SLYOHR

not attested not anchored not stored refs pending

A Survey on Retrieval of Mathematical Knowledge

C. Sacerdoti Coen, F. Guidi

arxiv:1505.06646 v3 · 2015-05-25 · cs.IR · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P7PPGT3E2MJ654PQHBZ5SLYOHR}

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	2026-05-18T01:37:47.140437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fdef34f64d313eef1f03873d92f0e3c71364e4fa66d466eb8fba822322672d1

Aliases

arxiv: 1505.06646 · arxiv_version: 1505.06646v3 · doi: 10.48550/arxiv.1505.06646 · pith_short_12: P7PPGT3E2MJ6 · pith_short_16: P7PPGT3E2MJ654PQ · pith_short_8: P7PPGT3E

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/P7PPGT3E2MJ654PQHBZ5SLYOHR \
  | 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: 7fdef34f64d313eef1f03873d92f0e3c71364e4fa66d466eb8fba822322672d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be21517360d1d77a0d57fcbf0d701533aa8008ee5dd2d9f3c897e68d008f68fc",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-05-25T14:39:09Z",
    "title_canon_sha256": "4ec357ef58a4c1985ac4b5a94b5b5a023315d9f2bf7de797c1b6aca1cb1459ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06646",
    "kind": "arxiv",
    "version": 3
  }
}