Pith Number

pith:SPFYWHYX

pith:2015:SPFYWHYXOO76TDKWAP2ZDTEBWU

not attested not anchored not stored refs pending

Gauge dependence in QED amplitudes in expanding de Sitter space

Nistor Nicolaevici

arxiv:1512.05922 v2 · 2015-12-18 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPFYWHYXOO76TDKWAP2ZDTEBWU}

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	2026-05-18T01:16:44.396037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93cb8b1f1773bfe98d5603f591cc81b50dedb96350b7485085e2b95038bcfcc4

Aliases

arxiv: 1512.05922 · arxiv_version: 1512.05922v2 · doi: 10.48550/arxiv.1512.05922 · pith_short_12: SPFYWHYXOO76 · pith_short_16: SPFYWHYXOO76TDKW · pith_short_8: SPFYWHYX

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/SPFYWHYXOO76TDKWAP2ZDTEBWU \
  | 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: 93cb8b1f1773bfe98d5603f591cc81b50dedb96350b7485085e2b95038bcfcc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a97ee8e99ad82609a28c60e5630e8c08ccb36fe38951273dcf25bc81049c760d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-12-18T12:21:15Z",
    "title_canon_sha256": "8e4b75e80a94c1c2f6be0c46a30a057d9ee229e9b42a67a814b2c46a8bd62d6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05922",
    "kind": "arxiv",
    "version": 2
  }
}