Pith Number

pith:IMARY3QB

pith:2013:IMARY3QBJ7XPZ5JUD7S4S5JT7M

not attested not anchored not stored refs pending

A Coloring Problem for Sturmian and Episturmian Words

Aldo de Luca, Elena V. Pribavkina, Luca Q. Zamboni

arxiv:1301.5263 v1 · 2013-01-22 · 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{IMARY3QBJ7XPZ5JUD7S4S5JT7M}

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	2026-05-18T03:35:52.433113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43011c6e014feefcf5341fe5c97533fb1068307e6c9354dd6feb73045bb9eac5

Aliases

arxiv: 1301.5263 · arxiv_version: 1301.5263v1 · doi: 10.48550/arxiv.1301.5263 · pith_short_12: IMARY3QBJ7XP · pith_short_16: IMARY3QBJ7XPZ5JU · pith_short_8: IMARY3QB

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/IMARY3QBJ7XPZ5JUD7S4S5JT7M \
  | 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: 43011c6e014feefcf5341fe5c97533fb1068307e6c9354dd6feb73045bb9eac5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61b4d33cf77d42752c90ef64584e42345a7f09bf8b6080fef0ccaad38cd7b5c7",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-01-22T18:23:24Z",
    "title_canon_sha256": "13cd5a947e529166e69f7f7d780cfcd39dda5b1565fd3f1a3bfcbb319f0c9607"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5263",
    "kind": "arxiv",
    "version": 1
  }
}