Pith Number

pith:CDGLR6JN

pith:2005:CDGLR6JN2VGT25BNU7TUGIPQBF

not attested not anchored not stored refs pending

A solution to the L space problem and related ZFC constructions

Justin Tatch Moore

arxiv:math/0501524 v1 · 2005-01-28 · math.GN · 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{CDGLR6JN2VGT25BNU7TUGIPQBF}

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	2026-05-18T03:11:10.173343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10ccb8f92dd54d3d742da7e74321f0097773bd5a0a79d7af85bf98b6847fc67e

Aliases

arxiv: math/0501524 · arxiv_version: math/0501524v1 · doi: 10.48550/arxiv.math/0501524 · pith_short_12: CDGLR6JN2VGT · pith_short_16: CDGLR6JN2VGT25BN · pith_short_8: CDGLR6JN

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/CDGLR6JN2VGT25BNU7TUGIPQBF \
  | 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: 10ccb8f92dd54d3d742da7e74321f0097773bd5a0a79d7af85bf98b6847fc67e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54c71a1ad032802008106080013c9f89aa809df89ea806af79b3d9756407a9a6",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "",
    "primary_cat": "math.GN",
    "submitted_at": "2005-01-28T22:31:07Z",
    "title_canon_sha256": "b80c78e99794ad9889658195a6fe13bc85c54de5fbeb87a931aada0e5c464441"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0501524",
    "kind": "arxiv",
    "version": 1
  }
}