Pith Number

pith:VRA5PSGH

pith:2013:VRA5PSGHUGZU2R3INUYOKATU6K

not attested not anchored not stored refs pending

Fresnel reflection from a cavity with net roundtrip gain

Masud Mansuripur, Tobias S. Mansuripur

arxiv:1307.5239 v1 · 2013-07-19 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VRA5PSGHUGZU2R3INUYOKATU6K}

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	2026-05-18T02:54:46.953502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac41d7c8c7a1b34d47686d30e50274f2bd7745665d422e2559f572dd9c5e7bd2

Aliases

arxiv: 1307.5239 · arxiv_version: 1307.5239v1 · doi: 10.48550/arxiv.1307.5239 · pith_short_12: VRA5PSGHUGZU · pith_short_16: VRA5PSGHUGZU2R3I · pith_short_8: VRA5PSGH

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/VRA5PSGHUGZU2R3INUYOKATU6K \
  | 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: ac41d7c8c7a1b34d47686d30e50274f2bd7745665d422e2559f572dd9c5e7bd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98e495c84267e70a98a5fb873dc2f725c6b442bae43dac447b74b0adcb5c9438",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-07-19T14:44:27Z",
    "title_canon_sha256": "4b9b9d75a352d98d64657b8173f4d0e866ba9cc7710aebb4a2ecbd288007cc31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5239",
    "kind": "arxiv",
    "version": 1
  }
}