Pith Number

pith:FX5ASZ33

pith:2018:FX5ASZ33BMDXY5OENS535ZYK5C

not attested not anchored not stored refs pending

Gradient Method in Hilbert-Besov Spaces for the Optimal Control of Parabolic Free Boundary Problems

Ali Hagverdiyev, Ugur G. Abdulla, Vladislav Bukshtynov

arxiv:1801.02735 v1 · 2018-01-09 · math.OC · math.AP · 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{FX5ASZ33BMDXY5OENS535ZYK5C}

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	2026-05-18T00:10:10.878365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dfa09677b0b077c75c46cbbbee70ae8b9febcaf19e0478be4023b8827748321

Aliases

arxiv: 1801.02735 · arxiv_version: 1801.02735v1 · doi: 10.48550/arxiv.1801.02735 · pith_short_12: FX5ASZ33BMDX · pith_short_16: FX5ASZ33BMDXY5OE · pith_short_8: FX5ASZ33

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/FX5ASZ33BMDXY5OENS535ZYK5C \
  | 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: 2dfa09677b0b077c75c46cbbbee70ae8b9febcaf19e0478be4023b8827748321

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a7c15f067ab437d40b078c7a37cce7b867049cc841620f4c71f7b7685447f89",
    "cross_cats_sorted": [
      "math.AP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-01-09T00:54:48Z",
    "title_canon_sha256": "6d79af310ae5e5132490532fde636c179a5ddd0d9beaffdb7426a05ad810608c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02735",
    "kind": "arxiv",
    "version": 1
  }
}