Pith Number

pith:5AEELJNJ

pith:2012:5AEELJNJU3KXMQRSNUNIANPLJJ

not attested not anchored not stored refs pending

A Class of Evolutionary Problems with an Application to Acoustic Waves with Impedance Type Boundary Conditions

Rainer Picard

arxiv:1204.5731 v1 · 2012-04-25 · math.AP · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5AEELJNJU3KXMQRSNUNIANPLJJ}

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	2026-05-18T03:29:38.635791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e80845a5a9a6d57642326d1a8035eb4a452cf65ce6082121f8f7347503feb928

Aliases

arxiv: 1204.5731 · arxiv_version: 1204.5731v1 · doi: 10.48550/arxiv.1204.5731 · pith_short_12: 5AEELJNJU3KX · pith_short_16: 5AEELJNJU3KXMQRS · pith_short_8: 5AEELJNJ

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/5AEELJNJU3KXMQRSNUNIANPLJJ \
  | 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: e80845a5a9a6d57642326d1a8035eb4a452cf65ce6082121f8f7347503feb928

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06831871c8f50a75ff8e9ba92f94084c782809d3c4141bb74c7024ed90284c35",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-04-25T19:16:21Z",
    "title_canon_sha256": "4a7ada4842f74baad7c55aec5ab207b3c918abb9d5a60ca51588da7d4b91cb5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5731",
    "kind": "arxiv",
    "version": 1
  }
}