Pith Number

pith:DWFB3JDY

pith:2017:DWFB3JDYJEG4S6XWZMOPGQMZXP

not attested not anchored not stored refs pending

On Algebraic condition for null controllability of some coupled degenerate systems

E. M. Ait Benhassi, L. Maniar, M. Fadili

arxiv:1705.03044 v1 · 2017-05-08 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DWFB3JDYJEG4S6XWZMOPGQMZXP}

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	2026-05-18T00:44:50.852155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d8a1da478490dc97af6cb1cf34199bbd4b7b5261883bec6ab28414135d9748e

Aliases

arxiv: 1705.03044 · arxiv_version: 1705.03044v1 · doi: 10.48550/arxiv.1705.03044 · pith_short_12: DWFB3JDYJEG4 · pith_short_16: DWFB3JDYJEG4S6XW · pith_short_8: DWFB3JDY

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/DWFB3JDYJEG4S6XWZMOPGQMZXP \
  | 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: 1d8a1da478490dc97af6cb1cf34199bbd4b7b5261883bec6ab28414135d9748e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8596ac3592333aae85da87407c590bc1359fbd5ad4ea417a61398cdd32123c7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-05-08T18:45:07Z",
    "title_canon_sha256": "5c7d803c5faededd7fd37c8bdf51ea878ad4cb908035d172383c00f15affd534"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.03044",
    "kind": "arxiv",
    "version": 1
  }
}