Pith Number

pith:H2WLZALF

pith:2014:H2WLZALF7RQPW3C3GJNWSIKJRA

not attested not anchored not stored refs pending

Some obstacles in characterising the boundedness of bi-parameter singular integrals

Henri Martikainen, Tuomas Orponen

arxiv:1404.2216 v1 · 2014-04-08 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2WLZALF7RQPW3C3GJNWSIKJRA}

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	2026-05-18T01:21:38.096334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eacbc8165fc60fb6c5b325b69214988330c2689fcfc538b066b1b7639ef63db

Aliases

arxiv: 1404.2216 · arxiv_version: 1404.2216v1 · doi: 10.48550/arxiv.1404.2216 · pith_short_12: H2WLZALF7RQP · pith_short_16: H2WLZALF7RQPW3C3 · pith_short_8: H2WLZALF

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/H2WLZALF7RQPW3C3GJNWSIKJRA \
  | 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: 3eacbc8165fc60fb6c5b325b69214988330c2689fcfc538b066b1b7639ef63db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9e6a25fe5e0d3619e73c3484ff4ada9bb20e8ff0c61fffdb69c6486903099f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2014-04-08T17:12:24Z",
    "title_canon_sha256": "0091668dcfefc960cf984391b6cfa4bdad09fc9d84d8b7a11cd60ce9c0677ddd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2216",
    "kind": "arxiv",
    "version": 1
  }
}