Pith Number

pith:7NLXYCEF

pith:2012:7NLXYCEF4C7M27LGYYQVURFQNC

not attested not anchored not stored refs pending

A Characterization of Bispecial Sturmian Words

Gabriele Fici

arxiv:1204.1672 v4 · 2012-04-07 · cs.FL · cs.CG · 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{7NLXYCEF4C7M27LGYYQVURFQNC}

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	2026-05-18T02:21:16.466380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb577c0885e0becd7d66c6215a44b06895827ec359f7fda1374bdcbeb2f046e7

Aliases

arxiv: 1204.1672 · arxiv_version: 1204.1672v4 · doi: 10.48550/arxiv.1204.1672 · pith_short_12: 7NLXYCEF4C7M · pith_short_16: 7NLXYCEF4C7M27LG · pith_short_8: 7NLXYCEF

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/7NLXYCEF4C7M27LGYYQVURFQNC \
  | 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: fb577c0885e0becd7d66c6215a44b06895827ec359f7fda1374bdcbeb2f046e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "969f16bea6cbef7b3ca3dd932d547ecf0a49472c50029bcb6df73b46ab5cf276",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-04-07T18:56:05Z",
    "title_canon_sha256": "49d3c51aab00525455804b9883938719641951fe140055cda7945dd60fc1faac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1672",
    "kind": "arxiv",
    "version": 4
  }
}