Pith Number

pith:UDOBRCH6

pith:2015:UDOBRCH6MU6M3KFSMX7VWXOCKB

not attested not anchored not stored refs pending

Infinite friezes

Karin Baur, Manuela Tschabold, Mark James Parsons

arxiv:1504.02695 v1 · 2015-04-10 · 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{UDOBRCH6MU6M3KFSMX7VWXOCKB}

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	2026-05-18T02:19:06.834557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0dc1888fe653ccda8b265ff5b5dc2504e14f4728694fbd96c79c223a4ce0859

Aliases

arxiv: 1504.02695 · arxiv_version: 1504.02695v1 · doi: 10.48550/arxiv.1504.02695 · pith_short_12: UDOBRCH6MU6M · pith_short_16: UDOBRCH6MU6M3KFS · pith_short_8: UDOBRCH6

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/UDOBRCH6MU6M3KFSMX7VWXOCKB \
  | 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: a0dc1888fe653ccda8b265ff5b5dc2504e14f4728694fbd96c79c223a4ce0859

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83a0ad0bd95d9e99b9fa2d102887ea4efd1efcd1d1cddbf9c572bd1c45c713ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-04-10T14:44:59Z",
    "title_canon_sha256": "6722e474b386193b5c2fe9cc8f3305c800461e08d174fa1a27944fd057f55099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02695",
    "kind": "arxiv",
    "version": 1
  }
}