Pith Number

pith:S7VMHE7X

pith:2020:S7VMHE7XHZMDR4OJF5BF4EDJVB

not attested not anchored not stored refs pending

Preconditioned Gradient Descent Algorithm for Inverse Filtering on Spatially Distributed Networks

Cheng cheng, Nazar Emirov, Qiyu Sun

arxiv:2007.11491 v1 · 2020-07-22 · cs.IT · cs.NA · math.IT · 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{S7VMHE7XHZMDR4OJF5BF4EDJVB}

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	2026-07-05T02:11:56.536488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97eac393f73e5838f1c92f425e1069a850fed7e9d88abfb81cdc6ccde985cb82

Aliases

arxiv: 2007.11491 · arxiv_version: 2007.11491v1 · doi: 10.48550/arxiv.2007.11491 · pith_short_12: S7VMHE7XHZMD · pith_short_16: S7VMHE7XHZMDR4OJ · pith_short_8: S7VMHE7X

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/S7VMHE7XHZMDR4OJF5BF4EDJVB \
  | 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: 97eac393f73e5838f1c92f425e1069a850fed7e9d88abfb81cdc6ccde985cb82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f30dd55b8df4f27036b5353641d1884514a7253b1c3b99e286f62e5fa600795",
    "cross_cats_sorted": [
      "cs.NA",
      "math.IT",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-07-22T15:29:00Z",
    "title_canon_sha256": "a17621a3049d7d6d462d8d4f4ecc1e57cfde0291b0bb38c082cf36d4973ce2cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.11491",
    "kind": "arxiv",
    "version": 1
  }
}