Pith Number

pith:RD37J5LR

pith:2015:RD37J5LREP37DVVHZQGWPG35ZQ

not attested not anchored not stored refs pending

Linear algorithms for phase retrieval in the Fresnel region: validity conditions

T.E. Gureyev, Ya.I. Nesterets

arxiv:1503.06949 v1 · 2015-03-24 · physics.med-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{RD37J5LREP37DVVHZQGWPG35ZQ}

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	2026-05-18T02:20:29.708014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88f7f4f57123f7f1d6a7cc0d679b7dcc131a810eac47aa0e63c5c9ce0f7e4e12

Aliases

arxiv: 1503.06949 · arxiv_version: 1503.06949v1 · doi: 10.48550/arxiv.1503.06949 · pith_short_12: RD37J5LREP37 · pith_short_16: RD37J5LREP37DVVH · pith_short_8: RD37J5LR

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/RD37J5LREP37DVVHZQGWPG35ZQ \
  | 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: 88f7f4f57123f7f1d6a7cc0d679b7dcc131a810eac47aa0e63c5c9ce0f7e4e12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13e40085807fea2cd6159d2932d6f8d6caac13dc6fad187eaeb101496dc9c453",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-03-24T08:51:36Z",
    "title_canon_sha256": "6bb1cd92c1dfc1c9e53b8404eb5c901ed09c1a49746e0228426f33640639439e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06949",
    "kind": "arxiv",
    "version": 1
  }
}