Pith Number

pith:H4OGUO5P

pith:2015:H4OGUO5PNY7QFN7O5ZQJ3B66LU

not attested not anchored not stored refs pending

Counting Skolem Sequences

Ali Assarpour, Amotz Barnoy, Ou Liu

arxiv:1507.00315 v4 · 2015-07-01 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4OGUO5PNY7QFN7O5ZQJ3B66LU}

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	2026-05-18T00:30:50.884363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f1c6a3baf6e3f02b7eeee609d87de5d16e310b963610fe6211d046eb9caa71c

Aliases

arxiv: 1507.00315 · arxiv_version: 1507.00315v4 · doi: 10.48550/arxiv.1507.00315 · pith_short_12: H4OGUO5PNY7Q · pith_short_16: H4OGUO5PNY7QFN7O · pith_short_8: H4OGUO5P

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/H4OGUO5PNY7QFN7O5ZQJ3B66LU \
  | 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: 3f1c6a3baf6e3f02b7eeee609d87de5d16e310b963610fe6211d046eb9caa71c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "878b2920f2d6a6827fd38beed469acd42ac5f75a5ce37c6fef24e4a1a633522f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-07-01T19:05:46Z",
    "title_canon_sha256": "6b2f127ddac443633f061daa1fcf29ac13802a2339708cf44d948f06ed624d17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00315",
    "kind": "arxiv",
    "version": 4
  }
}