Pith Number

pith:PL6YNJYC

pith:2009:PL6YNJYC6K3EJHLLONJ5AHU3QR

not attested not anchored not stored refs pending

Surgery of spline-type and molecular frames

Jos\'e Luis Romero

arxiv:0909.0050 v2 · 2009-08-31 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PL6YNJYC6K3EJHLLONJ5AHU3QR}

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	2026-05-18T02:18:01.943544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7afd86a702f2b6449d6b7353d01e9b84623e981583197a5628394ec44f1a7926

Aliases

arxiv: 0909.0050 · arxiv_version: 0909.0050v2 · doi: 10.48550/arxiv.0909.0050 · pith_short_12: PL6YNJYC6K3E · pith_short_16: PL6YNJYC6K3EJHLL · pith_short_8: PL6YNJYC

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/PL6YNJYC6K3EJHLLONJ5AHU3QR \
  | 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: 7afd86a702f2b6449d6b7353d01e9b84623e981583197a5628394ec44f1a7926

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87b2f77d11a6e83262f75e18811b8a45a9e771adaaa84c1fda3e5c6f51ff1e53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2009-08-31T23:27:56Z",
    "title_canon_sha256": "341dfa7efcd83346fb98c415354db403e65970b5a16959a02e59a5802bfb5c73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0050",
    "kind": "arxiv",
    "version": 2
  }
}