Pith Number

pith:FJUXFENJ

pith:2013:FJUXFENJR52EVJYZHMHL2WUO7C

not attested not anchored not stored refs pending

Illuminating and covering convex bodies

Christian Richter, Horst Martini, Margarita Spirova

arxiv:1308.0791 v1 · 2013-08-04 · 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{FJUXFENJR52EVJYZHMHL2WUO7C}

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	2026-05-18T03:16:48.150002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a697291a98f744aa7193b0ebd5a8ef8b05b0893f5e07c0e4510943745ae37e7

Aliases

arxiv: 1308.0791 · arxiv_version: 1308.0791v1 · doi: 10.48550/arxiv.1308.0791 · pith_short_12: FJUXFENJR52E · pith_short_16: FJUXFENJR52EVJYZ · pith_short_8: FJUXFENJ

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/FJUXFENJR52EVJYZHMHL2WUO7C \
  | 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: 2a697291a98f744aa7193b0ebd5a8ef8b05b0893f5e07c0e4510943745ae37e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2070a7e3f56d11dababab2171255eeb97c0786019532824367d9f84983dae8e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2013-08-04T09:03:37Z",
    "title_canon_sha256": "2e90415775b036327f2ae19b261dcf3cd583d6b0726e22b40f75a050500bbeaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0791",
    "kind": "arxiv",
    "version": 1
  }
}