Pith Number

pith:2O7KCPAC

pith:2014:2O7KCPACEQ5PGJ7ZLV2YGCOGWL

not attested not anchored not stored refs pending

Inverse transport calculations in optical imaging with subspace optimization algorithms

Kui Ren, Tian Ding

arxiv:1404.4919 v2 · 2014-04-19 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2O7KCPACEQ5PGJ7ZLV2YGCOGWL}

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	2026-05-18T01:43:27.315113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3bea13c02243af327f95d758309c6b2e3479e4fc6cafe934931f02a8dcce9e0

Aliases

arxiv: 1404.4919 · arxiv_version: 1404.4919v2 · doi: 10.48550/arxiv.1404.4919 · pith_short_12: 2O7KCPACEQ5P · pith_short_16: 2O7KCPACEQ5PGJ7Z · pith_short_8: 2O7KCPAC

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/2O7KCPACEQ5PGJ7ZLV2YGCOGWL \
  | 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: d3bea13c02243af327f95d758309c6b2e3479e4fc6cafe934931f02a8dcce9e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d44d699bc8134550a5663a64d23b408fd81e29d360c9c90e2f4ea0676e52c0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-04-19T04:21:51Z",
    "title_canon_sha256": "a645b3808382991c2189a5065703a1a4ab2a77afe99d164f774525881d415cfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.4919",
    "kind": "arxiv",
    "version": 2
  }
}