Pith Number

pith:RNHF2OPN

pith:2011:RNHF2OPNK5XEY6NO7E6A2XUXRS

not attested not anchored not stored refs pending

Palindromic richness for languages invariant under more symmetries

Edita Pelantov\'a, \v{S}t\v{e}p\'an Starosta

arxiv:1108.3042 v3 · 2011-08-15 · 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{RNHF2OPNK5XEY6NO7E6A2XUXRS}

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	2026-05-18T02:21:37.207615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b4e5d39ed576e4c79aef93c0d5e978c8f04782092ed4e868b24276a3f1e4045

Aliases

arxiv: 1108.3042 · arxiv_version: 1108.3042v3 · doi: 10.48550/arxiv.1108.3042 · pith_short_12: RNHF2OPNK5XE · pith_short_16: RNHF2OPNK5XEY6NO · pith_short_8: RNHF2OPN

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/RNHF2OPNK5XEY6NO7E6A2XUXRS \
  | 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: 8b4e5d39ed576e4c79aef93c0d5e978c8f04782092ed4e868b24276a3f1e4045

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccf8642458167fa54d8e6621d04e81b1157fd5870ab06ee29463264269553c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-08-15T18:01:30Z",
    "title_canon_sha256": "dc1a897693492e269c83e7e0fc939e868cd6ee80a314e85b9dd8fff73d0235eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3042",
    "kind": "arxiv",
    "version": 3
  }
}