Pith Number

pith:6QJYOWJY

pith:2020:6QJYOWJYGZLGSFOZB7JS4RFC6L

not attested not anchored not stored refs pending

Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries

Romain Fleury, Theodoros T. Koutserimpas

arxiv:2003.03188 v2 · 2020-03-06 · physics.optics · physics.class-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{6QJYOWJYGZLGSFOZB7JS4RFC6L}

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	2026-07-05T06:31:53.443222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f41387593836566915d90fd32e44a2f2c58f95ec25650189416ecd4f3c69b8a6

Aliases

arxiv: 2003.03188 · arxiv_version: 2003.03188v2 · doi: 10.48550/arxiv.2003.03188 · pith_short_12: 6QJYOWJYGZLG · pith_short_16: 6QJYOWJYGZLGSFOZ · pith_short_8: 6QJYOWJY

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/6QJYOWJYGZLGSFOZB7JS4RFC6L \
  | 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: f41387593836566915d90fd32e44a2f2c58f95ec25650189416ecd4f3c69b8a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0ac5d88f9e00d51d637b26cf353ceaeeb38f6dd12ad8b97c4a1d4ffff9a3b40",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-03-06T13:28:52Z",
    "title_canon_sha256": "d927e31e82f1dfc042993999bbe7dbe672acb2de2bdfbe21fe085274f1aed254"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.03188",
    "kind": "arxiv",
    "version": 2
  }
}