Pith Number

pith:EXLZM4QS

pith:2013:EXLZM4QSKIVU6FCKJVN65C6QAT

not attested not anchored not stored refs pending

Biharmonic curves into quadrics

A. Ratto, S. Montaldo

arxiv:1309.0631 v1 · 2013-09-03 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXLZM4QSKIVU6FCKJVN65C6QAT}

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	2026-05-18T03:14:18.523548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25d7967212522b4f144a4d5bee8bd004dbd28ddf39abf9bd0fcc27209d5846b2

Aliases

arxiv: 1309.0631 · arxiv_version: 1309.0631v1 · doi: 10.48550/arxiv.1309.0631 · pith_short_12: EXLZM4QSKIVU · pith_short_16: EXLZM4QSKIVU6FCK · pith_short_8: EXLZM4QS

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/EXLZM4QSKIVU6FCKJVN65C6QAT \
  | 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: 25d7967212522b4f144a4d5bee8bd004dbd28ddf39abf9bd0fcc27209d5846b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fa564a15c837d7ea4cf6eb6f30d866a9304424a6c12457f22d0ef4ddddfeee1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-09-03T10:12:55Z",
    "title_canon_sha256": "8e30f02a5f2cf3ee18e4cc6fdb158a22f5d4009794d01b8dcecca0c0d29dfdab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.0631",
    "kind": "arxiv",
    "version": 1
  }
}