Pith Number

pith:RG4ARJFR

pith:2009:RG4ARJFRRQHUC4ZMMCXECBPZZC

not attested not anchored not stored refs pending

Asymptotic wave-splitting in anisotropic linear acoustics

B. L. G. Jonsson, M. Norgren

arxiv:0908.1507 v1 · 2009-08-11 · math-ph · 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{RG4ARJFRRQHUC4ZMMCXECBPZZC}

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	2026-05-17T23:51:56.220984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89b808a4b18c0f41732c60ae4105f9c88f3e5bafce8af4c060fa243c6bf60259

Aliases

arxiv: 0908.1507 · arxiv_version: 0908.1507v1 · doi: 10.48550/arxiv.0908.1507 · pith_short_12: RG4ARJFRRQHU · pith_short_16: RG4ARJFRRQHUC4ZM · pith_short_8: RG4ARJFR

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/RG4ARJFRRQHUC4ZMMCXECBPZZC \
  | 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: 89b808a4b18c0f41732c60ae4105f9c88f3e5bafce8af4c060fa243c6bf60259

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9bdd204c49104ca18089e613b1250f7d8684ee3c193d663058df06e460967eb",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-08-11T12:41:55Z",
    "title_canon_sha256": "d807252642a1ec18aad17a66456b9937da4a513092cad660c4ed456076276c98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1507",
    "kind": "arxiv",
    "version": 1
  }
}