Pith Number

pith:MQUVCQ4U

pith:2018:MQUVCQ4UMYF4ATY35ZU6SXOW5E

not attested not anchored not stored refs pending

Faster light with competing absorption and gain

Jon D. Swaim, Ryan T. Glasser

arxiv:1804.01541 v1 · 2018-04-04 · physics.optics · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MQUVCQ4UMYF4ATY35ZU6SXOW5E}

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	2026-05-18T00:16:24.911915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6429514394660bc04f1bee69e95dd6e911af77fabeb7fb4a1a706222379860cb

Aliases

arxiv: 1804.01541 · arxiv_version: 1804.01541v1 · doi: 10.48550/arxiv.1804.01541 · pith_short_12: MQUVCQ4UMYF4 · pith_short_16: MQUVCQ4UMYF4ATY3 · pith_short_8: MQUVCQ4U

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/MQUVCQ4UMYF4ATY35ZU6SXOW5E \
  | 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: 6429514394660bc04f1bee69e95dd6e911af77fabeb7fb4a1a706222379860cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b21fffe77c3dbc50b6eb669bbb614836e00a1a6905587a109ea304ea8bac7d28",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-04-04T18:00:13Z",
    "title_canon_sha256": "f2eb03045ef00d277036de3d3a7b21a6e80e1ec308b729c99cad35710603d9b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01541",
    "kind": "arxiv",
    "version": 1
  }
}