Pith Number

pith:DYGRF5VW

pith:2016:DYGRF5VW363MWYKKS2C2RBNB3A

not attested not anchored not stored refs pending

A-optimal encoding weights for nonlinear inverse problems, with applications to the Helmholtz inverse problem

Alen Alexanderian, Benjamin Crestel, Georg Stadler, Omar Ghattas

arxiv:1612.02358 v2 · 2016-12-07 · math.OC · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DYGRF5VW363MWYKKS2C2RBNB3A}

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	2026-05-18T00:39:00.878655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e0d12f6b6dfb6cb614a9685a885a1d8060cafb6ed37427d1337a6f5ee865b01

Aliases

arxiv: 1612.02358 · arxiv_version: 1612.02358v2 · doi: 10.48550/arxiv.1612.02358 · pith_short_12: DYGRF5VW363M · pith_short_16: DYGRF5VW363MWYKK · pith_short_8: DYGRF5VW

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/DYGRF5VW363MWYKKS2C2RBNB3A \
  | 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: 1e0d12f6b6dfb6cb614a9685a885a1d8060cafb6ed37427d1337a6f5ee865b01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a55a19355bc48d2b0530eda3a54c0559a8d403621596b26e6a14fdd65c4bf03e",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-12-07T18:23:21Z",
    "title_canon_sha256": "305d975f5cd402e3721c451dad1e8b215639e727a5394d3ad898643014a19271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.02358",
    "kind": "arxiv",
    "version": 2
  }
}