Pith Number

pith:6EISHDYB

pith:2018:6EISHDYBYFV3G7YHYVJFWZGA2K

not attested not anchored not stored refs pending

Riordan Pseudo-Involutions, Continued Fractions and Somos $4$ Sequences

Paul Barry

arxiv:1807.05794 v2 · 2018-07-16 · 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{6EISHDYBYFV3G7YHYVJFWZGA2K}

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	2026-05-18T00:10:16.340677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f111238f01c16bb37f07c5525b64c0d29248d34307119690613f8fd92b896204

Aliases

arxiv: 1807.05794 · arxiv_version: 1807.05794v2 · doi: 10.48550/arxiv.1807.05794 · pith_short_12: 6EISHDYBYFV3 · pith_short_16: 6EISHDYBYFV3G7YH · pith_short_8: 6EISHDYB

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/6EISHDYBYFV3G7YHYVJFWZGA2K \
  | 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: f111238f01c16bb37f07c5525b64c0d29248d34307119690613f8fd92b896204

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a461ad6b8d8eba639d6cbd167115919170f702ab5af5641fa95f595d04bd9aa0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-16T11:16:41Z",
    "title_canon_sha256": "83b356dec5b4147842c659423086a238a06fbd64d056f3fe4ac60c0dc263e04b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05794",
    "kind": "arxiv",
    "version": 2
  }
}