Pith Number

pith:FTQ7SUDR

pith:2018:FTQ7SUDROTVZXPTNWLLKDM7LIY

not attested not anchored not stored refs pending

A bias parity question for Sturmian words

Alexandru Zaharescu, Cristian Cobeli

arxiv:1811.06509 v1 · 2018-11-15 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTQ7SUDROTVZXPTNWLLKDM7LIY}

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	2026-05-18T00:00:37.567933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce1f9507174eb9bbe6db2d6a1b3eb46281fa2af64fa9ffee571933e0d4358a2

Aliases

arxiv: 1811.06509 · arxiv_version: 1811.06509v1 · doi: 10.48550/arxiv.1811.06509 · pith_short_12: FTQ7SUDROTVZ · pith_short_16: FTQ7SUDROTVZXPTN · pith_short_8: FTQ7SUDR

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/FTQ7SUDROTVZXPTNWLLKDM7LIY \
  | 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: 2ce1f9507174eb9bbe6db2d6a1b3eb46281fa2af64fa9ffee571933e0d4358a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a2320809de8c2cfb05f8c6aaeacf41778a0b2bc20bad5b27e19b49a4163ecc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2018-11-15T18:08:14Z",
    "title_canon_sha256": "cfbec37dfcab66a1f0e0e64fa0e1c9b3a457395f068807677a60874da464d9dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06509",
    "kind": "arxiv",
    "version": 1
  }
}