Pith Number

pith:6UHSSB76

pith:2017:6UHSSB76Y4ZK6BMZXQRFU4FKP4

not attested not anchored not stored refs pending

A multigrid solver to the Helmholtz equation with a point source based on travel time and amplitude

Eldad Haber, Eran Treister

arxiv:1712.06091 v1 · 2017-12-17 · cs.CE · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6UHSSB76Y4ZK6BMZXQRFU4FKP4}

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	2026-05-18T00:27:51.096188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f50f2907fec732af0599bc225a70aa7f11133c85ecdc7a82d380ca1b8430e267

Aliases

arxiv: 1712.06091 · arxiv_version: 1712.06091v1 · doi: 10.48550/arxiv.1712.06091 · pith_short_12: 6UHSSB76Y4ZK · pith_short_16: 6UHSSB76Y4ZK6BMZ · pith_short_8: 6UHSSB76

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/6UHSSB76Y4ZK6BMZXQRFU4FKP4 \
  | 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: f50f2907fec732af0599bc225a70aa7f11133c85ecdc7a82d380ca1b8430e267

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d167efabe9664017683ae622b823c2b76ada47a1ca7f53bf0aec48168195691b",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2017-12-17T11:44:36Z",
    "title_canon_sha256": "13aa8ef6011731431f3ddd9adc79f461b97ed0246dcd672af122652830f82bdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.06091",
    "kind": "arxiv",
    "version": 1
  }
}