Pith Number

pith:QYNADGT7

pith:2017:QYNADGT7GEDK4UIC2UTEKMLAUP

not attested not anchored not stored refs pending

Non-satisfiability of a positivity condition for commutator-free exponential integrators of order higher than four

Harald Hofst\"atter, Othmar Koch

arxiv:1709.08473 v2 · 2017-09-25 · math.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{QYNADGT7GEDK4UIC2UTEKMLAUP}

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	2026-05-17T23:57:06.213684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

861a019a7f3106ae5102d526453160a3d9d4724361536930fd7d144e9d81ae87

Aliases

arxiv: 1709.08473 · arxiv_version: 1709.08473v2 · doi: 10.48550/arxiv.1709.08473 · pith_short_12: QYNADGT7GEDK · pith_short_16: QYNADGT7GEDK4UIC · pith_short_8: QYNADGT7

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/QYNADGT7GEDK4UIC2UTEKMLAUP \
  | 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: 861a019a7f3106ae5102d526453160a3d9d4724361536930fd7d144e9d81ae87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "508056f22f4fde950cf26e7691611bdb9ccd39ae1b083a17af136cf0984acfb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-25T13:14:30Z",
    "title_canon_sha256": "595a2a96e5c99bdbbe6a6f69a69d5a8ea5af34d7808656acb0c7c0a3abd04788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08473",
    "kind": "arxiv",
    "version": 2
  }
}