Pith Number

pith:KEPNOTC6

pith:2014:KEPNOTC62UFQB2MZP3QEGOSSCI

not attested not anchored not stored refs pending

A metric approach to limit operators

Jan Spakula, Rufus Willett

arxiv:1408.0678 v2 · 2014-08-04 · math.FA · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEPNOTC62UFQB2MZP3QEGOSSCI}

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	2026-05-18T02:29:31.933442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

511ed74c5ed50b00e9997ee0433a521226f81e40c194e4ea10edd14694ca18b1

Aliases

arxiv: 1408.0678 · arxiv_version: 1408.0678v2 · doi: 10.48550/arxiv.1408.0678 · pith_short_12: KEPNOTC62UFQ · pith_short_16: KEPNOTC62UFQB2MZ · pith_short_8: KEPNOTC6

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/KEPNOTC62UFQB2MZP3QEGOSSCI \
  | 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: 511ed74c5ed50b00e9997ee0433a521226f81e40c194e4ea10edd14694ca18b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d862d9cb2570d2141db44cb56eb8a2fabef4252bca2b263a422bf2c098a576e",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2014-08-04T13:29:54Z",
    "title_canon_sha256": "4d7016d0ef3a52d94178f3a3ff46b19696dc321c898e74b3b166e33c08154352"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0678",
    "kind": "arxiv",
    "version": 2
  }
}