Pith Number

pith:JBP7ILRS

pith:2012:JBP7ILRSM3DXE364DEYW47CYVK

not attested not anchored not stored refs pending

A new level-dependent coarsegrid correction scheme for indefinite Helmholtz problems

Bram Reps, Siegfried Cools, Wim Vanroose

arxiv:1211.4752 v2 · 2012-11-20 · math.NA · math-ph · math.AP · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JBP7ILRSM3DXE364DEYW47CYVK}

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	2026-05-18T03:14:06.926260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

485ff42e3266c7726fdc19316e7c58aaacd30fae00be2fb3913c9a0c490059d6

Aliases

arxiv: 1211.4752 · arxiv_version: 1211.4752v2 · doi: 10.48550/arxiv.1211.4752 · pith_short_12: JBP7ILRSM3DX · pith_short_16: JBP7ILRSM3DXE364 · pith_short_8: JBP7ILRS

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/JBP7ILRSM3DXE364DEYW47CYVK \
  | 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: 485ff42e3266c7726fdc19316e7c58aaacd30fae00be2fb3913c9a0c490059d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf7728242f26f80702c685afb7f316f570c5c575cb1b3b36fddeec117e6785a7",
    "cross_cats_sorted": [
      "math-ph",
      "math.AP",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-20T14:21:55Z",
    "title_canon_sha256": "e97aa2a7c66618a92836c9f80d70c82e1f03ade247d42c03e27a1a9401904a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4752",
    "kind": "arxiv",
    "version": 2
  }
}