Pith Number

pith:QAXPACMM

pith:2021:QAXPACMMBOSR35UFGQJS7R7WXI

not attested not anchored not stored refs pending

Stochastic convergence of regularized solutions and their finite element approximations to inverse source problems

Jun Zou, Wenlong Zhang, Zhiming Chen

arxiv:2104.02352 v2 · 2021-04-06 · 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{QAXPACMMBOSR35UFGQJS7R7WXI}

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	2026-07-05T03:24:42.143935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

802ef0098c0ba51df68534132fc7f6ba2e0c9eba9472cf7f04c2a92cd90d8ca4

Aliases

arxiv: 2104.02352 · arxiv_version: 2104.02352v2 · doi: 10.48550/arxiv.2104.02352 · pith_short_12: QAXPACMMBOSR · pith_short_16: QAXPACMMBOSR35UF · pith_short_8: QAXPACMM

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/QAXPACMMBOSR35UFGQJS7R7WXI \
  | 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: 802ef0098c0ba51df68534132fc7f6ba2e0c9eba9472cf7f04c2a92cd90d8ca4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "401a6a5e10630eaca5cc53a0104ac8a53d06b88b0789903a299e0770ebb4da84",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-04-06T08:24:03Z",
    "title_canon_sha256": "9f451e681b8fc7252383a9f054d13a12dce84d0022bed57820f140937ac7dc56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02352",
    "kind": "arxiv",
    "version": 2
  }
}