Pith Number

pith:2GHLW6TR

pith:2016:2GHLW6TRSQ2ET2BXJHWYLYESSG

not attested not anchored not stored refs pending

Non-negativity constraints in the one-dimensional discrete-time phase retrieval problem

Robert Beinert

arxiv:1605.05482 v1 · 2016-05-18 · math.NA · cs.IT · cs.NA · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2GHLW6TRSQ2ET2BXJHWYLYESSG}

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	2026-06-04T18:09:40.990187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d18ebb7a71943449e83749ed85e09291998390d649e1bc21f1575615bb32d80d

Aliases

arxiv: 1605.05482 · arxiv_version: 1605.05482v1 · doi: 10.48550/arxiv.1605.05482 · pith_short_12: 2GHLW6TRSQ2E · pith_short_16: 2GHLW6TRSQ2ET2BX · pith_short_8: 2GHLW6TR

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/2GHLW6TRSQ2ET2BXJHWYLYESSG \
  | 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: d18ebb7a71943449e83749ed85e09291998390d649e1bc21f1575615bb32d80d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4db31bb6926dfed64c0dba7b00e872ecdd08fb7932e26b4c75a0f20399dc9c54",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.NA",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-05-18T09:00:09Z",
    "title_canon_sha256": "97fa98bb1e9a2b8d1617e2de6f2125f67f6ec52dbf8768eacd66fa6806621e52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.05482",
    "kind": "arxiv",
    "version": 1
  }
}