Pith Number

pith:UBDPI5EK

pith:2014:UBDPI5EKBPIIXGLDIYEUTCSLCZ

not attested not anchored not stored refs pending

Initial value problems for wave equations on manifolds

Christian Baer, Roger Tagne Wafo

arxiv:1408.4995 v2 · 2014-08-21 · math.AP · gr-qc · math-ph · math.DG · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UBDPI5EKBPIIXGLDIYEUTCSLCZ}

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	2026-05-18T01:42:16.086124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a046f4748a0bd08b99634609498a4b165d1973a9871670b0521c647d5c311813

Aliases

arxiv: 1408.4995 · arxiv_version: 1408.4995v2 · doi: 10.48550/arxiv.1408.4995 · pith_short_12: UBDPI5EKBPII · pith_short_16: UBDPI5EKBPIIXGLD · pith_short_8: UBDPI5EK

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/UBDPI5EKBPIIXGLDIYEUTCSLCZ \
  | 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: a046f4748a0bd08b99634609498a4b165d1973a9871670b0521c647d5c311813

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c289c38e09ec8f2bea0657335356c97903f5162a9c0d7926aaa8d34c4bd581f3",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-08-21T13:21:43Z",
    "title_canon_sha256": "4c21da49caf21997b88292cb9ed08ac6a6fe039c1c794bff7487c098b5f4dcc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.4995",
    "kind": "arxiv",
    "version": 2
  }
}