Pith Number

pith:SQSZJ4KE

pith:2013:SQSZJ4KEYTXA5L6JOVR2COCFUT

not attested not anchored not stored refs pending

Weingarten surfaces with moving frames -- a tribute to S.S. Chern and C.L. Terng -- and a duality result

Magdalena Toda

arxiv:1302.5395 v1 · 2013-02-21 · 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{SQSZJ4KEYTXA5L6JOVR2COCFUT}

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	2026-05-18T03:32:57.778212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

942594f144c4ee0eafc97563a13845a4fda4a53cb26a443f7822b2465ef6ed44

Aliases

arxiv: 1302.5395 · arxiv_version: 1302.5395v1 · doi: 10.48550/arxiv.1302.5395 · pith_short_12: SQSZJ4KEYTXA · pith_short_16: SQSZJ4KEYTXA5L6J · pith_short_8: SQSZJ4KE

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/SQSZJ4KEYTXA5L6JOVR2COCFUT \
  | 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: 942594f144c4ee0eafc97563a13845a4fda4a53cb26a443f7822b2465ef6ed44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79cecc2f678668c6af900248fa80501e24f8ad6e01afcd307f20ee7d672fd31a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-02-21T20:08:44Z",
    "title_canon_sha256": "6d76d16fe7f2e2464eba66d4053ca0314d8ca364cc136bda6f3462838f242954"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5395",
    "kind": "arxiv",
    "version": 1
  }
}