Pith Number

pith:NUPJZFN6

pith:2017:NUPJZFN6GQZ6YJ4IGRNSDNYRUQ

not attested not anchored not stored refs pending

A remark on the Sibony function

Marek Jarnicki, Peter Pflug

arxiv:1801.01026 v1 · 2017-12-31 · math.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUPJZFN6GQZ6YJ4IGRNSDNYRUQ}

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	2026-05-18T00:23:16.265537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d1e9c95be3433ec2788345b21b711a40550e6e11ce65ea0bb5edc6c1dc9418a

Aliases

arxiv: 1801.01026 · arxiv_version: 1801.01026v1 · doi: 10.48550/arxiv.1801.01026 · pith_short_12: NUPJZFN6GQZ6 · pith_short_16: NUPJZFN6GQZ6YJ4I · pith_short_8: NUPJZFN6

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/NUPJZFN6GQZ6YJ4IGRNSDNYRUQ \
  | 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: 6d1e9c95be3433ec2788345b21b711a40550e6e11ce65ea0bb5edc6c1dc9418a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "661d877935074a307ff7a853e17e498b25ab54af5fa5003c07d1ea884afd1b49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2017-12-31T12:30:57Z",
    "title_canon_sha256": "955b3d40a974a01360c66a0b74b8a037076ee869fbcbd952898c5d9dd43d0af1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01026",
    "kind": "arxiv",
    "version": 1
  }
}