Pith Number

pith:HQUBQJ5D

pith:2013:HQUBQJ5D5U5FC24T5YCTFNBNUN

not attested not anchored not stored refs pending

An interview with Tsuyoshi Ando

Mohammad Sal Moslehian, Richard A. Brualdi

arxiv:1311.7199 v2 · 2013-11-28 · math.HO · 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{HQUBQJ5D5U5FC24T5YCTFNBNUN}

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	2026-05-18T02:38:53.078542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c281827a3ed3a516b93ee0532b42da37de55262bf8fd8d785e00a977b2f684e

Aliases

arxiv: 1311.7199 · arxiv_version: 1311.7199v2 · doi: 10.48550/arxiv.1311.7199 · pith_short_12: HQUBQJ5D5U5F · pith_short_16: HQUBQJ5D5U5FC24T · pith_short_8: HQUBQJ5D

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/HQUBQJ5D5U5FC24T5YCTFNBNUN \
  | 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: 3c281827a3ed3a516b93ee0532b42da37de55262bf8fd8d785e00a977b2f684e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc700fc4924c7566a0b00c6c13e6ed143f73ed819173d75ed4fe26c1631e6de0",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-11-28T04:05:10Z",
    "title_canon_sha256": "f2ff9b8bb906bd5c60bbb6bcd36e43771f9897f131c6c60466fc266185fc10a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7199",
    "kind": "arxiv",
    "version": 2
  }
}