Pith Number

pith:3B5EQKW6

pith:2026:3B5EQKW6PR76YGLSI2KQDSDKRW

not attested not anchored not stored refs pending

BEM for variable coefficient second-order problems

Benedikt Gr\"a{\ss}le, Stefan A. Sauter

arxiv:2605.22159 v1 · 2026-05-21 · math.NA · 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{3B5EQKW6PR76YGLSI2KQDSDKRW}

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	2026-05-22T01:04:29.136755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d87a482ade7c7fec1972469501c86a8daca0d0873501331d5006c8feaa2d6544

Aliases

arxiv: 2605.22159 · arxiv_version: 2605.22159v1 · doi: 10.48550/arxiv.2605.22159 · pith_short_12: 3B5EQKW6PR76 · pith_short_16: 3B5EQKW6PR76YGLS · pith_short_8: 3B5EQKW6

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/3B5EQKW6PR76YGLSI2KQDSDKRW \
  | 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: d87a482ade7c7fec1972469501c86a8daca0d0873501331d5006c8feaa2d6544

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a579d19e5fdb93f23a71a141339c9aaf2b2eee979f14d661ab92fb9299cbd417",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-21T08:28:22Z",
    "title_canon_sha256": "1b5c288688f38caab57c137a3a89e570ee14e4e95c59c331a226e023f5a3ae22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22159",
    "kind": "arxiv",
    "version": 1
  }
}