Pith Number

pith:QIJJQ2ZB

pith:2018:QIJJQ2ZBYY5AE2ONGEWZHLI6IG

not attested not anchored not stored refs pending

The method of polarized traces for the 3D Helmholtz equation

Adrien Scheuer, Laurent Demanet, Leonardo Zepeda-N\'u\~nez, Russell J. Hewett

arxiv:1801.08655 v1 · 2018-01-26 · 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{QIJJQ2ZBYY5AE2ONGEWZHLI6IG}

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	2026-05-18T00:25:03.331536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8212986b21c63a0269cd312d93ad1e41b7cc2ee9004407fd7d17e2ff0dbdba84

Aliases

arxiv: 1801.08655 · arxiv_version: 1801.08655v1 · doi: 10.48550/arxiv.1801.08655 · pith_short_12: QIJJQ2ZBYY5A · pith_short_16: QIJJQ2ZBYY5AE2ON · pith_short_8: QIJJQ2ZB

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/QIJJQ2ZBYY5AE2ONGEWZHLI6IG \
  | 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: 8212986b21c63a0269cd312d93ad1e41b7cc2ee9004407fd7d17e2ff0dbdba84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e1c8ad9531e1c0e0f926a4ec1f58600180b89b86fe6dee864b6a38b52eeab26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-26T02:24:50Z",
    "title_canon_sha256": "2b1f662a9f5e1aa6572a00c431a251944fdedc40634e152230c7093ad9316aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08655",
    "kind": "arxiv",
    "version": 1
  }
}