Pith Number

pith:OQBILNXY

pith:2017:OQBILNXYKRPME6UQGCOPEC6BUH

not attested not anchored not stored refs pending

Sharp finiteness principles for Lipschitz selections

Charles Fefferman, Pavel Shvartsman

arxiv:1801.00325 v3 · 2017-12-31 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQBILNXYKRPME6UQGCOPEC6BUH}

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	2026-05-18T00:08:54.841336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

740285b6f8545ec27a90309cf20bc1a1c67a7e318d4a350913ac324bd52ffb6d

Aliases

arxiv: 1801.00325 · arxiv_version: 1801.00325v3 · doi: 10.48550/arxiv.1801.00325 · pith_short_12: OQBILNXYKRPM · pith_short_16: OQBILNXYKRPME6UQ · pith_short_8: OQBILNXY

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/OQBILNXYKRPME6UQGCOPEC6BUH \
  | 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: 740285b6f8545ec27a90309cf20bc1a1c67a7e318d4a350913ac324bd52ffb6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "948a33517ebe321f9f6c3836907e9bb169b7f9f8223f83f939aeaeb697f30a12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-12-31T17:37:31Z",
    "title_canon_sha256": "4732bc5372719954dda5e4fe4c9e26d816f25d822cebfd13b6993d48f80756b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.00325",
    "kind": "arxiv",
    "version": 3
  }
}