Pith Number

pith:UEICK2WS

pith:2017:UEICK2WSXI2CH4GUJDMSO2ZPZO

not attested not anchored not stored refs pending

Exponential lower bounds on spectrahedral representations of hyperbolicity cones

Benjamin Weitz, Nick Ryder, Nikhil Srivastava, Prasad Raghavendra

arxiv:1711.11497 v2 · 2017-11-30 · math.OC · cs.CC

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

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	2026-05-18T00:26:12.495324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a110256ad2ba3423f0d448d9276b2fcb96223f45fb6156d71c0aafd06965ceee

Aliases

arxiv: 1711.11497 · arxiv_version: 1711.11497v2 · doi: 10.48550/arxiv.1711.11497 · pith_short_12: UEICK2WSXI2C · pith_short_16: UEICK2WSXI2CH4GU · pith_short_8: UEICK2WS

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/UEICK2WSXI2CH4GUJDMSO2ZPZO \
  | 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: a110256ad2ba3423f0d448d9276b2fcb96223f45fb6156d71c0aafd06965ceee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d55d3ce883881a9ae37c5ada958c754596b02ac5e49fab852a8908ef07ad679",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-11-30T16:23:12Z",
    "title_canon_sha256": "5dbba17999f87c8c0ed3b8787c05f674fbcc46be9d415e05fd9b0c8bd5115e61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.11497",
    "kind": "arxiv",
    "version": 2
  }
}