Pith Number

pith:IAR2Q6PV

pith:2018:IAR2Q6PV4QG62O7UALPXERVC3L

not attested not anchored not stored refs pending

Ramanujan-type formulae for $1/\pi$: $q$-analogues

Victor J. W. Guo, Wadim Zudilin

arxiv:1802.04616 v2 · 2018-02-13 · math.NT · math.CA · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IAR2Q6PV4QG62O7UALPXERVC3L}

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	2026-05-18T00:14:48.200417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4023a879f5e40ded3bf402df7246a2dac4fa8e2ec437371b8c9d2f97eb181930

Aliases

arxiv: 1802.04616 · arxiv_version: 1802.04616v2 · doi: 10.48550/arxiv.1802.04616 · pith_short_12: IAR2Q6PV4QG6 · pith_short_16: IAR2Q6PV4QG62O7U · pith_short_8: IAR2Q6PV

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/IAR2Q6PV4QG62O7UALPXERVC3L \
  | 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: 4023a879f5e40ded3bf402df7246a2dac4fa8e2ec437371b8c9d2f97eb181930

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b83d41f8c7e3e8ec40ce716097a7b7a04525b2354d2295b8caf6f6194b7fbba",
    "cross_cats_sorted": [
      "math.CA",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2018-02-13T13:35:26Z",
    "title_canon_sha256": "c2369f92c5553168e95e69db164d529dac15dc9aa6590ada867f523dfbe229ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04616",
    "kind": "arxiv",
    "version": 2
  }
}