Pith. sign in
Pith Number

pith:6TPQPYV7

pith:2021:6TPQPYV7LYU54KWBZLOH5O3XE2
not attested not anchored not stored refs pending

Feynman's i-epsilon prescription, almost real spacetimes, and acceptable complex spacetimes

Matt Visser (Victoria University of Wellington)

arxiv:2111.14016 v3 · 2021-11-28 · gr-qc · hep-th

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{6TPQPYV7LYU54KWBZLOH5O3XE2}

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.

Cited by

1 paper in Pith

Receipt and verification
First computed 2026-07-05T04:54:48.341913Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f4df07e2bf5e29de2ac1cadc7ebb7726a8634e4173dec2bcbbf71fb125dda099

Aliases

arxiv: 2111.14016 · arxiv_version: 2111.14016v3 · doi: 10.48550/arxiv.2111.14016 · pith_short_12: 6TPQPYV7LYU5 · pith_short_16: 6TPQPYV7LYU54KWB · pith_short_8: 6TPQPYV7
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/6TPQPYV7LYU54KWBZLOH5O3XE2 \
  | 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: f4df07e2bf5e29de2ac1cadc7ebb7726a8634e4173dec2bcbbf71fb125dda099
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "b152c95d421d6179ef3452b2a8530b842144a29e159dad0945d7f5470ee5b323",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-11-28T01:22:31Z",
    "title_canon_sha256": "19865127a797e26e6f93c58f06281be9a84c7e3f02bf1eb0e4710bed81d3c00e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.14016",
    "kind": "arxiv",
    "version": 3
  }
}