Pith Number

pith:EXA2K7IH

pith:2018:EXA2K7IHOJOBKIVREEWOPF4AAB

not attested not anchored not stored refs pending

Strictly hyperbolic Cauchy problems with coefficients low-regular in time and space

Daniel Lorenz

arxiv:1807.05811 v1 · 2018-07-16 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXA2K7IHOJOBKIVREEWOPF4AAB}

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	2026-05-18T00:10:42.503086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25c1a57d07725c1522b1212ce79780007b58b5cf4d8cd279946cb59918b93144

Aliases

arxiv: 1807.05811 · arxiv_version: 1807.05811v1 · doi: 10.48550/arxiv.1807.05811 · pith_short_12: EXA2K7IHOJOB · pith_short_16: EXA2K7IHOJOBKIVR · pith_short_8: EXA2K7IH

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/EXA2K7IHOJOBKIVREEWOPF4AAB \
  | 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: 25c1a57d07725c1522b1212ce79780007b58b5cf4d8cd279946cb59918b93144

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af5a54f9069fe1ac00556a2f35d3bc7e2e3a638eb5275dfde31f618e2e158c04",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-07-16T12:03:18Z",
    "title_canon_sha256": "cd1488db0748250f311478942cfa6853ea520242d5c1238299f0a4ceefe70f80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05811",
    "kind": "arxiv",
    "version": 1
  }
}