Pith Number

pith:RIF27DWR

pith:2025:RIF27DWRAMQDGTJJ2D2IUWFNHA

not attested not anchored not stored refs pending

Accelerating seismic inversion and uncertainty quantification with efficient high-rank Hessian approximations

Mathew Hu, Nick Alger, Omar Ghattas, Rami Nammour

arxiv:2507.10804 v2 · 2025-07-14 · math.NA · cs.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{RIF27DWRAMQDGTJJ2D2IUWFNHA}

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	2026-07-05T11:51:00.159405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a0baf8ed10320334d29d0f48a58ad38193493a5a5da6f296e79564df16ca73d

Aliases

arxiv: 2507.10804 · arxiv_version: 2507.10804v2 · doi: 10.48550/arxiv.2507.10804 · pith_short_12: RIF27DWRAMQD · pith_short_16: RIF27DWRAMQDGTJJ · pith_short_8: RIF27DWR

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/RIF27DWRAMQDGTJJ2D2IUWFNHA \
  | 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: 8a0baf8ed10320334d29d0f48a58ad38193493a5a5da6f296e79564df16ca73d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea556986d4e90d1f107b8294998941591b56bde58c64082f99c5b708b0a885d7",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-07-14T20:58:38Z",
    "title_canon_sha256": "ce8ffd32730fa1acc9ae8cc8c4f1a6dc544f1767ef3cc7bac8dc2cab7dfd464e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.10804",
    "kind": "arxiv",
    "version": 2
  }
}