Pith Number

pith:TJEMUZYC

pith:2007:TJEMUZYCN4EDCQGCGCC6MIOHWW

not attested not anchored not stored refs pending

Occurrences of palindromes in characteristic Sturmian words

Amy Glen

arxiv:0708.4389 v1 · 2007-08-31 · math.CO · 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{TJEMUZYCN4EDCQGCGCC6MIOHWW}

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	2026-07-04T17:23:15.769756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a48ca67026f083140c23085e621c7b5a7fdf5a8043282d4324052194545f4b2

Aliases

arxiv: 0708.4389 · arxiv_version: 0708.4389v1 · doi: 10.48550/arxiv.0708.4389 · pith_short_12: TJEMUZYCN4ED · pith_short_16: TJEMUZYCN4EDCQGC · pith_short_8: TJEMUZYC

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/TJEMUZYCN4EDCQGCGCC6MIOHWW \
  | 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: 9a48ca67026f083140c23085e621c7b5a7fdf5a8043282d4324052194545f4b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfa5edd0f5e4185cb6670c4996fde8e1b43390e3c0b86c8a3fa31e1a509c5904",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2007-08-31T16:49:21Z",
    "title_canon_sha256": "555729beb634107703507aa9b21a9fe750720e9596c7e2a7469439dbe7f18a9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.4389",
    "kind": "arxiv",
    "version": 1
  }
}