Pith Number

pith:UJTZIEB7

pith:2017:UJTZIEB7HM6I5GLCEICCYSD24T

not attested not anchored not stored refs pending

On the Cauchy problem for $D_t^2-D_x(b(t)a(x))D_x$

Ferruccio Colombini, Tatsuo Nishitani

arxiv:1712.05253 v2 · 2017-12-14 · 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{UJTZIEB7HM6I5GLCEICCYSD24T}

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	2026-05-18T00:13:04.976067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a26794103f3b3c8e996222042c487ae4e6f3b1233408c8d28f0597d50491d184

Aliases

arxiv: 1712.05253 · arxiv_version: 1712.05253v2 · doi: 10.48550/arxiv.1712.05253 · pith_short_12: UJTZIEB7HM6I · pith_short_16: UJTZIEB7HM6I5GLC · pith_short_8: UJTZIEB7

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/UJTZIEB7HM6I5GLCEICCYSD24T \
  | 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: a26794103f3b3c8e996222042c487ae4e6f3b1233408c8d28f0597d50491d184

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58d4beb41b0874a00b340cf6269f211fc34521c1986c13fc4eeed13907472368",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-12-14T14:41:53Z",
    "title_canon_sha256": "cced5aff1816e1229aab85fabc90dc7ba75d72edeec928233642498dd8cd28a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05253",
    "kind": "arxiv",
    "version": 2
  }
}