Pith Number

pith:7A7WM5AN

pith:1995:7A7WM5ANHHK5QIVHG4Y7G6QBSG

not attested not anchored not stored refs pending

The Bounded Proper Forcing Axiom

Martin Goldstern, Saharon Shelah

arxiv:math/9501222 v1 · 1995-01-15 · 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{7A7WM5ANHHK5QIVHG4Y7G6QBSG}

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	2026-05-18T01:05:50.611687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f83f66740d39d5d822a73731f37a0191aef049adfec715976781b5551bda97fc

Aliases

arxiv: math/9501222 · arxiv_version: math/9501222v1 · doi: 10.48550/arxiv.math/9501222 · pith_short_12: 7A7WM5ANHHK5 · pith_short_16: 7A7WM5ANHHK5QIVH · pith_short_8: 7A7WM5AN

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/7A7WM5ANHHK5QIVHG4Y7G6QBSG \
  | 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: f83f66740d39d5d822a73731f37a0191aef049adfec715976781b5551bda97fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6992c081b984ecb8ecdbf475e2c8f9a86fbcb6384e5b3efda09c3cf438559a0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1995-01-15T00:00:00Z",
    "title_canon_sha256": "f63248235ec3f39ed03e83bfe5d7b8782e18d8861d7fe26be53c67b6900c7dc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9501222",
    "kind": "arxiv",
    "version": 1
  }
}