Pith Number

pith:ZDVYGCLF

pith:2018:ZDVYGCLFJQMN4FCB4BVBGNKE3Q

not attested not anchored not stored refs pending

A note on small sets of reals

Saharon Shelah, Tomek Bartoszynski

arxiv:1805.02703 v1 · 2018-05-07 · 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{ZDVYGCLFJQMN4FCB4BVBGNKE3Q}

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	2026-05-18T00:16:36.008896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8eb8309654c18de1441e06a133544dc0ef4a3abe040406f90625aa5b531ec39

Aliases

arxiv: 1805.02703 · arxiv_version: 1805.02703v1 · doi: 10.48550/arxiv.1805.02703 · pith_short_12: ZDVYGCLFJQMN · pith_short_16: ZDVYGCLFJQMN4FCB · pith_short_8: ZDVYGCLF

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/ZDVYGCLFJQMN4FCB4BVBGNKE3Q \
  | 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: c8eb8309654c18de1441e06a133544dc0ef4a3abe040406f90625aa5b531ec39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5c1e51264f42414e10bd27877357c3da7d9c01da98bf31d7c9d66c6bd318494",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-05-07T19:16:14Z",
    "title_canon_sha256": "de2e0b12023fe20ef3edd1bcf39f4a5cc8a0cb01f8013a512071796a30df60c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02703",
    "kind": "arxiv",
    "version": 1
  }
}