Pith Number

pith:XR6Q6WQ6

pith:2025:XR6Q6WQ63AXLQT5LCUTRNMLTZN

not attested not anchored not stored refs pending

Lectures on measurement in quantum field theory

Christopher J. Fewster

arxiv:2504.17437 v1 · 2025-04-24 · gr-qc · math-ph · math.MP · 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{XR6Q6WQ63AXLQT5LCUTRNMLTZN}

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

Phenomenological constraints on "impossible" measurements

Receipt and verification

First computed	2026-07-05T10:53:28.712077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7d0f5a1ed82eb84fab152716b173cb5238aa83f42c611cfef2c461d38bfb43

Aliases

arxiv: 2504.17437 · arxiv_version: 2504.17437v1 · doi: 10.48550/arxiv.2504.17437 · pith_short_12: XR6Q6WQ63AXL · pith_short_16: XR6Q6WQ63AXLQT5L · pith_short_8: XR6Q6WQ6

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/XR6Q6WQ63AXLQT5LCUTRNMLTZN \
  | 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: bc7d0f5a1ed82eb84fab152716b173cb5238aa83f42c611cfef2c461d38bfb43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19400bc96659270d0bb606c34bae82b093051b5d2b602b97eae339ae58bfbe9c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-04-24T10:56:56Z",
    "title_canon_sha256": "034b74d82eb0866bc568456e4d01d99f08882f8e2bb656fae632f0276ade94f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.17437",
    "kind": "arxiv",
    "version": 1
  }
}