Pith Number

pith:DQQVRP6I

pith:1998:DQQVRP6IWHVSKSLUCNJ23DC7R4

not attested not anchored not stored refs pending

A model with no magic sets

Krzysztof Ciesielski, Saharon Shelah

arxiv:math/9801154 v1 · 1998-01-15 · 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{DQQVRP6IWHVSKSLUCNJ23DC7R4}

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	2026-05-18T01:05:34.331934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c2158bfc8b1eb2549741353ad8c5f8f2e734b0386a86dc340376d8f2e5e6b2a

Aliases

arxiv: math/9801154 · arxiv_version: math/9801154v1 · doi: 10.48550/arxiv.math/9801154 · pith_short_12: DQQVRP6IWHVS · pith_short_16: DQQVRP6IWHVSKSLU · pith_short_8: DQQVRP6I

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/DQQVRP6IWHVSKSLUCNJ23DC7R4 \
  | 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: 1c2158bfc8b1eb2549741353ad8c5f8f2e734b0386a86dc340376d8f2e5e6b2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebbc2c3dd00e84f91005b06fc77f6a4d368cb3dc88fcd77204270017d7892676",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1998-01-15T00:00:00Z",
    "title_canon_sha256": "ab7f5e477369ddca06ad63126a98a336a5616599d90dfba6983aa335b2c474f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9801154",
    "kind": "arxiv",
    "version": 1
  }
}