Pith Number

pith:OB67EZY7

pith:2020:OB67EZY7EZPMTAPZ67TKKPGNAP

not attested not anchored not stored refs pending

Asymptotic Boundary Observability For The Wave Equation On Simplices

Hans Christianson, Ziqing Lu

arxiv:2004.01748 v1 · 2020-04-03 · 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{OB67EZY7EZPMTAPZ67TKKPGNAP}

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	2026-07-05T00:52:37.913169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

707df2671f265ec981f9f7e6a53ccd03ce6a94df3aa819a315d893d9384455cb

Aliases

arxiv: 2004.01748 · arxiv_version: 2004.01748v1 · doi: 10.48550/arxiv.2004.01748 · pith_short_12: OB67EZY7EZPM · pith_short_16: OB67EZY7EZPMTAPZ · pith_short_8: OB67EZY7

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/OB67EZY7EZPMTAPZ67TKKPGNAP \
  | 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: 707df2671f265ec981f9f7e6a53ccd03ce6a94df3aa819a315d893d9384455cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed735f1374d90bf46e6639b7784f438015b63ccd1b0bb7ee39b00143abc36fc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2020-04-03T19:44:34Z",
    "title_canon_sha256": "bfea97dc449d65d3a6758ae9cfdd8ae651084f558d054962cf8259844b309312"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.01748",
    "kind": "arxiv",
    "version": 1
  }
}