Pith Number

pith:OW6NQ5CT

pith:2020:OW6NQ5CTWX6DVCQ2ZG377SYSF4

not attested not anchored not stored refs pending

Vectorial ball Prolate spheroidal wave functions with the divergence free constraint

Guidoum Ikram, Huiyuan Li, Jing Zhang

arxiv:2004.03888 v1 · 2020-04-08 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OW6NQ5CTWX6DVCQ2ZG377SYSF4}

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	2026-07-05T00:53:57.423006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75bcd87453b5fc3a8a1ac9b7ffcb122f18b3e880caf745cb1b70bb46d9686547

Aliases

arxiv: 2004.03888 · arxiv_version: 2004.03888v1 · doi: 10.48550/arxiv.2004.03888 · pith_short_12: OW6NQ5CTWX6D · pith_short_16: OW6NQ5CTWX6DVCQ2 · pith_short_8: OW6NQ5CT

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/OW6NQ5CTWX6DVCQ2ZG377SYSF4 \
  | 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: 75bcd87453b5fc3a8a1ac9b7ffcb122f18b3e880caf745cb1b70bb46d9686547

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36057503be91abcfc0577f78b1f93c7b3b8024617650751a124715f93ae7ba7d",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-04-08T09:01:55Z",
    "title_canon_sha256": "85da6ed5465b65729880b21fecb777201403d82e94827903f947a582574452d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03888",
    "kind": "arxiv",
    "version": 1
  }
}