Pith Number

pith:SP3LL6QK

pith:1994:SP3LL6QKLNV7RU5IPSD22JVEO7

not attested not anchored not stored refs pending

Decomposing Baire class 1 functions into continuous functions

Juris Stepr\=ans, Saharon Shelah

arxiv:math/9401218 v1 · 1994-01-15 · 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{SP3LL6QKLNV7RU5IPSD22JVEO7}

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	2026-05-18T01:05:51.695564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93f6b5fa0a5b6bf8d3a87c87ad26a477cd7a088573bf6c5bc06931917a9dd606

Aliases

arxiv: math/9401218 · arxiv_version: math/9401218v1 · doi: 10.48550/arxiv.math/9401218 · pith_short_12: SP3LL6QKLNV7 · pith_short_16: SP3LL6QKLNV7RU5I · pith_short_8: SP3LL6QK

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/SP3LL6QKLNV7RU5IPSD22JVEO7 \
  | 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: 93f6b5fa0a5b6bf8d3a87c87ad26a477cd7a088573bf6c5bc06931917a9dd606

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "585312c3795a215a355257a8482ec3e9dba020d61697960b1503632b431cfafe",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1994-01-15T00:00:00Z",
    "title_canon_sha256": "72d1f5dc01ab0f529c6025268e171a0609656515fab32b326e73f406c8588572"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9401218",
    "kind": "arxiv",
    "version": 1
  }
}