Pith Number

pith:QJZRSPSF

pith:2014:QJZRSPSFVNG7WZGWR6SAMAUXNK

not attested not anchored not stored refs pending

On the last question of Stefan Banach

Pasha Zusmanovich

arxiv:1408.2982 v6 · 2014-08-13 · math.HO · math.CO · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJZRSPSFVNG7WZGWR6SAMAUXNK}

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	2026-05-18T00:09:37.011422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8273193e45ab4dfb64d68fa40602976a94087dbf84254d783bbb401158562318

Aliases

arxiv: 1408.2982 · arxiv_version: 1408.2982v6 · doi: 10.48550/arxiv.1408.2982 · pith_short_12: QJZRSPSFVNG7 · pith_short_16: QJZRSPSFVNG7WZGW · pith_short_8: QJZRSPSF

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/QJZRSPSFVNG7WZGWR6SAMAUXNK \
  | 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: 8273193e45ab4dfb64d68fa40602976a94087dbf84254d783bbb401158562318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b17d8eff0dddb79133ca04c00739c603370ded6b5a9237b75e301fe346f5fee7",
    "cross_cats_sorted": [
      "math.CO",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2014-08-13T11:41:22Z",
    "title_canon_sha256": "6fcee9ee7031905c4b82edd6a37296f354bce48837a597855a0996417b6306db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2982",
    "kind": "arxiv",
    "version": 6
  }
}