Pith Number

pith:3HHSBE22

pith:2018:3HHSBE227QANBBBNWN5YLISTB4

not attested not anchored not stored refs pending

What is Nonreciprocity? Part II

Andrea Al\`u, Christophe Caloz, Dimitrios Sounas, Karim Achouri, Sergei Tretyakov, Zo\'e-Lise Deck-L\'eger

arxiv:1804.00238 v2 · 2018-04-01 · 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{3HHSBE227QANBBBNWN5YLISTB4}

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	2026-05-18T00:19:01.966977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9cf20935afc00d0842db37b85a2530f316ab6246780fdcb2074d586625c9a2c

Aliases

arxiv: 1804.00238 · arxiv_version: 1804.00238v2 · doi: 10.48550/arxiv.1804.00238 · pith_short_12: 3HHSBE227QAN · pith_short_16: 3HHSBE227QANBBBN · pith_short_8: 3HHSBE22

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/3HHSBE227QANBBBNWN5YLISTB4 \
  | 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: d9cf20935afc00d0842db37b85a2530f316ab6246780fdcb2074d586625c9a2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efa8b905fe89aedd7fee4de228a0ce42d31085480021db779e1df423cce0cf45",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-04-01T01:07:57Z",
    "title_canon_sha256": "cfab044bf36058972689a6dea1cf2bede4110a3fd61bb0c685cc7ccf62ef7881"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.00238",
    "kind": "arxiv",
    "version": 2
  }
}