Pith Number

pith:AI5REJPO

pith:2009:AI5REJPOUDUTB6XDPPKCUP2U3A

not attested not anchored not stored refs pending

Broadband Exterior Cloaking

Daniel Onofrei, Fernando Guevara Vasquez, Graeme W. Milton

arxiv:0907.0263 v1 · 2009-07-01 · 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{AI5REJPOUDUTB6XDPPKCUP2U3A}

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	2026-05-18T01:59:51.051569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

023b1225eea0e930fae37bd42a3f54d8380a4698ba46514f4b97cc65e727d8eb

Aliases

arxiv: 0907.0263 · arxiv_version: 0907.0263v1 · doi: 10.48550/arxiv.0907.0263 · pith_short_12: AI5REJPOUDUT · pith_short_16: AI5REJPOUDUTB6XD · pith_short_8: AI5REJPO

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/AI5REJPOUDUTB6XDPPKCUP2U3A \
  | 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: 023b1225eea0e930fae37bd42a3f54d8380a4698ba46514f4b97cc65e727d8eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cce1d15e62f982663335b234f8bc2747bc71443d7d235eb38da2b74b9cc2926d",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-07-01T23:38:58Z",
    "title_canon_sha256": "e45eba218e9f9e8804de7559d5bba8650211486707474d01071c5240677a110e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0263",
    "kind": "arxiv",
    "version": 1
  }
}