Pith Number

pith:KM4S2GNJ

pith:2019:KM4S2GNJBQWT7ZNEWD5H2RSPQ2

not attested not anchored not stored refs pending

A Flexible, Parallel, Adaptive Geometric Multigrid method for FEM

Guido Kanschat, Martin Kronbichler, Thomas C. Clevenger, Timo Heister

arxiv:1904.03317 v2 · 2019-04-05 · math.NA · cs.MS · 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{KM4S2GNJBQWT7ZNEWD5H2RSPQ2}

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	2026-06-04T20:14:23.386041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53392d19a90c2d3fe5a4b0fa7d464f86b3a0fe1f4550f08e8a087bd548f3c922

Aliases

arxiv: 1904.03317 · arxiv_version: 1904.03317v2 · doi: 10.48550/arxiv.1904.03317 · pith_short_12: KM4S2GNJBQWT · pith_short_16: KM4S2GNJBQWT7ZNE · pith_short_8: KM4S2GNJ

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/KM4S2GNJBQWT7ZNEWD5H2RSPQ2 \
  | 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: 53392d19a90c2d3fe5a4b0fa7d464f86b3a0fe1f4550f08e8a087bd548f3c922

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "893607fc0f837868b6fa123dcb766335249cdc3d54fe60088e29657547f30380",
    "cross_cats_sorted": [
      "cs.MS",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-05T23:05:33Z",
    "title_canon_sha256": "e06ece7bf8b4d6b6abd14d6a073e4b0c6622dc06e8b4fa8487182ab3a10172b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03317",
    "kind": "arxiv",
    "version": 2
  }
}