Pith Number

pith:Z4SSFLI5

pith:2008:Z4SSFLI5Y52NE62CJEC6S6XHLA

not attested not anchored not stored refs pending

The Minkowski problem for the torsional rigidity

A. Colesanti, M. Fimiani

arxiv:0809.4580 v1 · 2008-09-26 · math.AP · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4SSFLI5Y52NE62CJEC6S6XHLA}

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	2026-07-04T15:14:39.349857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf2522ad1dc774d27b424905e97ae7581ff3f7f9302f54af37f1110e40b91d72

Aliases

arxiv: 0809.4580 · arxiv_version: 0809.4580v1 · doi: 10.48550/arxiv.0809.4580 · pith_short_12: Z4SSFLI5Y52N · pith_short_16: Z4SSFLI5Y52NE62C · pith_short_8: Z4SSFLI5

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/Z4SSFLI5Y52NE62CJEC6S6XHLA \
  | 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: cf2522ad1dc774d27b424905e97ae7581ff3f7f9302f54af37f1110e40b91d72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5172cbcecceebe4203cfdf3c1cca92b07cff946f4bf1c1615ee64b1a19a4ac89",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2008-09-26T09:54:20Z",
    "title_canon_sha256": "4aa6eefee8a3cddda2431471b2593e3163660e68c0e5bcdb9b221743ebb1fb31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.4580",
    "kind": "arxiv",
    "version": 1
  }
}