Pith Number

pith:FT6YWY2N

pith:2015:FT6YWY2N3OL7NF2YTH25WK3K6R

not attested not anchored not stored refs pending

Relaxed Linearized Algorithms for Faster X-Ray CT Image Reconstruction

Hung Nien, Jeffrey A. Fessler

arxiv:1512.04564 v1 · 2015-12-14 · math.OC · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FT6YWY2N3OL7NF2YTH25WK3K6R}

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	2026-05-17T23:43:28.842634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cfd8b634ddb97f6975899f5db2b6af45898d4bf89b88bbbbcbae758a148b018

Aliases

arxiv: 1512.04564 · arxiv_version: 1512.04564v1 · doi: 10.48550/arxiv.1512.04564 · pith_short_12: FT6YWY2N3OL7 · pith_short_16: FT6YWY2N3OL7NF2Y · pith_short_8: FT6YWY2N

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/FT6YWY2N3OL7NF2YTH25WK3K6R \
  | 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: 2cfd8b634ddb97f6975899f5db2b6af45898d4bf89b88bbbbcbae758a148b018

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c2d5c1f9c41a0cd47e9785b1595a9cc8c59d90694505a2e67ac5c04c529182a",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-12-14T21:31:23Z",
    "title_canon_sha256": "a03dff99cb83e6393f84109a797e6948ea0ea7ab2ad16cb6182790da4530f55c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04564",
    "kind": "arxiv",
    "version": 1
  }
}