Pith Number

pith:HQAXULNR

pith:2019:HQAXULNRU2NSZHGQNCLGHAJ2ZS

not attested not anchored not stored refs pending

Convex analysis in normed spaces and metric projections onto convex bodies

Horst Martini, Ralph Teixeira, Vitor Balestro

arxiv:1908.08742 v1 · 2019-08-23 · math.MG · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HQAXULNRU2NSZHGQNCLGHAJ2ZS}

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	2026-07-04T23:59:23.769880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c017a2db1a69b2c9cd0689663813acc8ddce2ef8d1a3d8f57ad7939b148a23d

Aliases

arxiv: 1908.08742 · arxiv_version: 1908.08742v1 · doi: 10.48550/arxiv.1908.08742 · pith_short_12: HQAXULNRU2NS · pith_short_16: HQAXULNRU2NSZHGQ · pith_short_8: HQAXULNR

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/HQAXULNRU2NSZHGQNCLGHAJ2ZS \
  | 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: 3c017a2db1a69b2c9cd0689663813acc8ddce2ef8d1a3d8f57ad7939b148a23d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4a4f0515c4eaa82f88e11439b514ca5d60500ca0f116afcbb02312b798de446",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-08-23T09:54:04Z",
    "title_canon_sha256": "abc5c7ffc65ceb1a807de45dd33d6056454354d392d04d4bfcdc412e1b4cf6c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08742",
    "kind": "arxiv",
    "version": 1
  }
}