Pith Number

pith:RUL4G4QW

pith:2019:RUL4G4QWGAHM3K6WWUF7L5XQBK

not attested not anchored not stored refs pending

Multigrid-reduction-in-time for Eddy Current problems

Jens Hahne, Sebastian Sch\"ops, Stephanie Friedhoff

arxiv:1905.06879 v1 · 2019-05-16 · math.NA · cs.CE · 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{RUL4G4QWGAHM3K6WWUF7L5XQBK}

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	2026-06-04T20:14:31.316042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d17c37216300ecdabd6b50bf5f6f00a8da93d41b02ac96ed1c74e0ea7e6fe69

Aliases

arxiv: 1905.06879 · arxiv_version: 1905.06879v1 · doi: 10.48550/arxiv.1905.06879 · pith_short_12: RUL4G4QWGAHM · pith_short_16: RUL4G4QWGAHM3K6W · pith_short_8: RUL4G4QW

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/RUL4G4QWGAHM3K6WWUF7L5XQBK \
  | 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: 8d17c37216300ecdabd6b50bf5f6f00a8da93d41b02ac96ed1c74e0ea7e6fe69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cccdbddd801d16889cdf5c04455d26609cfb9dc105918ad63dcc9e1bfd4361d3",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-16T16:05:52Z",
    "title_canon_sha256": "a09cdc21b8389bfc00d962981e66a27d4101aadf5361f5e0091d13079246bf90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06879",
    "kind": "arxiv",
    "version": 1
  }
}