Pith Number

pith:HSBZJMN5

pith:2026:HSBZJMN5YXWBLSB3X2O5WBYKFS

not attested not anchored not stored refs pending

Weak essentially undecidable theories of hereditarily finite multisets

Platon Sifnaios

arxiv:2607.11367 v1 · 2026-07-13 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSBZJMN5YXWBLSB3X2O5WBYKFS}

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	2026-07-14T01:22:31.352292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c8394b1bdc5ec15c83bbe9ddb070a2cbd5e58ec1550a729715e6391d24d4f52

Aliases

arxiv: 2607.11367 · arxiv_version: 2607.11367v1 · doi: 10.48550/arxiv.2607.11367 · pith_short_12: HSBZJMN5YXWB · pith_short_16: HSBZJMN5YXWBLSB3 · pith_short_8: HSBZJMN5

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/HSBZJMN5YXWBLSB3X2O5WBYKFS \
  | 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: 3c8394b1bdc5ec15c83bbe9ddb070a2cbd5e58ec1550a729715e6391d24d4f52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd30efaaa7fd20488ed3f6b48d3440907b616d1e731646940cffa7694ea95e84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2026-07-13T10:31:52Z",
    "title_canon_sha256": "aed489d26450a06fe8fcad0bc4914277f0f29542e4b6d0940ff2d9d94b102fe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.11367",
    "kind": "arxiv",
    "version": 1
  }
}