Pith Number

pith:GNUABZ25

pith:2015:GNUABZ252XO4XP67ZVA6OMXP5O

not attested not anchored not stored refs pending

Fast Hadamard transforms for compressive sensing of joint systems: measurement of a 3.2 million-dimensional bi-photon probability distribution

Daniel J. Lum, John C. Howell, Samuel H. Knarr

arxiv:1505.05431 v3 · 2015-05-20 · 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{GNUABZ252XO4XP67ZVA6OMXP5O}

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	2026-05-18T01:29:29.472736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

336800e75dd5ddcbbfdfcd41e732efebb2f6c0f96f329dbd89c2aca15a6cac54

Aliases

arxiv: 1505.05431 · arxiv_version: 1505.05431v3 · doi: 10.48550/arxiv.1505.05431 · pith_short_12: GNUABZ252XO4 · pith_short_16: GNUABZ252XO4XP67 · pith_short_8: GNUABZ25

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/GNUABZ252XO4XP67ZVA6OMXP5O \
  | 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: 336800e75dd5ddcbbfdfcd41e732efebb2f6c0f96f329dbd89c2aca15a6cac54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae7ca467ad17175637c3fdcc2d6e6f1b8c09c60e315491064955eda16749becd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-05-20T15:52:15Z",
    "title_canon_sha256": "7377f47c547adb2900874ce7d00b2f130af66dc889b2b3a4e0fb961a39c017e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.05431",
    "kind": "arxiv",
    "version": 3
  }
}