Pith Number

pith:VXIO63WX

pith:2014:VXIO63WXDSDYR4RISON6RBHQFD

not attested not anchored not stored refs pending

A first order system least squares method for the Helmholtz equation

Huangxin Chen, Weifeng Qiu

arxiv:1409.3362 v2 · 2014-09-11 · math.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{VXIO63WXDSDYR4RISON6RBHQFD}

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	2026-05-18T01:30:35.240936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

add0ef6ed71c8788f228939be884f028c21aec940930a8abe6bd2be93cb10d14

Aliases

arxiv: 1409.3362 · arxiv_version: 1409.3362v2 · doi: 10.48550/arxiv.1409.3362 · pith_short_12: VXIO63WXDSDY · pith_short_16: VXIO63WXDSDYR4RI · pith_short_8: VXIO63WX

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/VXIO63WXDSDYR4RISON6RBHQFD \
  | 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: add0ef6ed71c8788f228939be884f028c21aec940930a8abe6bd2be93cb10d14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bb5d0e8631267dfbc3d2372de52c56b13265d5fc4c60a62ee8cc3310e8531d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-09-11T09:19:39Z",
    "title_canon_sha256": "5f31a79ce5965882b95f4d8d4ebbb5dad2d113d7fd4a1bfcac5351b034656851"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3362",
    "kind": "arxiv",
    "version": 2
  }
}