Pith Number

pith:AN7SF6MK

pith:2018:AN7SF6MKDHP2EGWPSJRKVZINTC

not attested not anchored not stored refs pending

Inapproximability of Matrix $p\rightarrow q$ Norms

Euiwoong Lee, Madhur Tulsiani, Mrinalkanti Ghosh, Venkatesan Guruswami, Vijay Bhattiprolu

arxiv:1802.07425 v2 · 2018-02-21 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AN7SF6MKDHP2EGWPSJRKVZINTC}

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	2026-05-18T00:08:31.147375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

037f22f98a19dfa21acf9262aae50d98919c9049917c7bcab1861098bda30bb4

Aliases

arxiv: 1802.07425 · arxiv_version: 1802.07425v2 · doi: 10.48550/arxiv.1802.07425 · pith_short_12: AN7SF6MKDHP2 · pith_short_16: AN7SF6MKDHP2EGWP · pith_short_8: AN7SF6MK

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/AN7SF6MKDHP2EGWPSJRKVZINTC \
  | 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: 037f22f98a19dfa21acf9262aae50d98919c9049917c7bcab1861098bda30bb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b666b70762b6cbf0ef4e47583f0db687107eda5ca2891bbfca8a4c171156412",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-02-21T05:02:10Z",
    "title_canon_sha256": "f7a6dc43da293b7c4f8c24ed9fb9167315f7da110b488e356db9ff0efe1f5cc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07425",
    "kind": "arxiv",
    "version": 2
  }
}