Pith Number

pith:LWU5CLWG

pith:2015:LWU5CLWGIH73BH7OYTANXK26DE

not attested not anchored not stored refs pending

Palindromic complexity of trees

Nadia Lafreni\`ere, Sre\v{c}ko Brlek, Xavier Proven\c{c}al

arxiv:1505.02695 v1 · 2015-05-11 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LWU5CLWGIH73BH7OYTANXK26DE}

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	2026-05-18T02:16:11.839048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5da9d12ec641ffb09feec4c0dbab5e192c5f71653c22b79930ad67889ec3eac0

Aliases

arxiv: 1505.02695 · arxiv_version: 1505.02695v1 · doi: 10.48550/arxiv.1505.02695 · pith_short_12: LWU5CLWGIH73 · pith_short_16: LWU5CLWGIH73BH7O · pith_short_8: LWU5CLWG

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/LWU5CLWGIH73BH7OYTANXK26DE \
  | 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: 5da9d12ec641ffb09feec4c0dbab5e192c5f71653c22b79930ad67889ec3eac0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "551dcc2cbde1a10b45c9cabac558ca8d7b255c1ac43e6a5c705203ca6a88062b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-05-11T16:24:52Z",
    "title_canon_sha256": "4ad3b290aea81f18fccf57ba94436bfcf55a86c2fa06c8fb8d8b307b9b1fb74c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02695",
    "kind": "arxiv",
    "version": 1
  }
}