Pith Number

pith:FCPDMI4E

pith:2019:FCPDMI4EZMRQFH43RZSZPIETJB

not attested not anchored not stored refs pending

A computational glimpse at the Leibniz and Frege hierarchies

T. Moraschini

arxiv:1908.00922 v1 · 2019-08-01 · 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{FCPDMI4EZMRQFH43RZSZPIETJB}

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	2026-07-04T23:51:15.551660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

289e362384cb23029f9b8e6597a093487781f9cbf5a764d1fc50450375285b49

Aliases

arxiv: 1908.00922 · arxiv_version: 1908.00922v1 · doi: 10.48550/arxiv.1908.00922 · pith_short_12: FCPDMI4EZMRQ · pith_short_16: FCPDMI4EZMRQFH43 · pith_short_8: FCPDMI4E

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/FCPDMI4EZMRQFH43RZSZPIETJB \
  | 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: 289e362384cb23029f9b8e6597a093487781f9cbf5a764d1fc50450375285b49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91017481b8e8b1f6cb7dcc0f7bcd57a3503eb90090f071bae410b3344b5d652e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-08-01T17:50:06Z",
    "title_canon_sha256": "62385c739c98889296338c5eb5d51979ce9234ab0538e9fdadddfb9c7ac87bdb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00922",
    "kind": "arxiv",
    "version": 1
  }
}