Pith Number

pith:7JSFFCR4

pith:1998:7JSFFCR4ZQENY5SIXHFF65EEVX

not attested not anchored not stored refs pending

Two examples concerning almost continuous functions

Andrzej Roslanowski, Krzysztof Ciesielski

arxiv:math/9811011 v1 · 1998-11-03 · math.CA · 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{7JSFFCR4ZQENY5SIXHFF65EEVX}

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	2026-05-18T03:37:19.332267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa64528a3ccc08dc7648b9ca5f7484adde1062d123dce41e3cc738452def3cc0

Aliases

arxiv: math/9811011 · arxiv_version: math/9811011v1 · doi: 10.48550/arxiv.math/9811011 · pith_short_12: 7JSFFCR4ZQEN · pith_short_16: 7JSFFCR4ZQENY5SI · pith_short_8: 7JSFFCR4

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/7JSFFCR4ZQENY5SIXHFF65EEVX \
  | 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: fa64528a3ccc08dc7648b9ca5f7484adde1062d123dce41e3cc738452def3cc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77f011c2bb46c0aaa697ba41e371cc9b001d0b9720af97ec0c85faa03838f870",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "",
    "primary_cat": "math.CA",
    "submitted_at": "1998-11-03T17:18:16Z",
    "title_canon_sha256": "6db5f6ddf0d1c51bf371e9114f5918245d1e8d787c5800b3ef7b5284d0de59ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9811011",
    "kind": "arxiv",
    "version": 1
  }
}