Pith Number

pith:EXLOW5XX

pith:2015:EXLOW5XXKI5MMHX34BWFB3SDBA

not attested not anchored not stored refs pending

A New Identity for the Least-square Solution of Overdetermined Set of Linear Equations

Afsaneh Asaei, Mohammad J. Taghizadeh, Saeid Haghighatshoar

arxiv:1502.07695 v1 · 2015-02-25 · math.OC

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	2026-05-18T02:26:03.107720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25d6eb76f7523ac61efbe06c50ee4308076214d8d9fc64f0b7a4ba3beab250e7

Aliases

arxiv: 1502.07695 · arxiv_version: 1502.07695v1 · doi: 10.48550/arxiv.1502.07695 · pith_short_12: EXLOW5XXKI5M · pith_short_16: EXLOW5XXKI5MMHX3 · pith_short_8: EXLOW5XX

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/EXLOW5XXKI5MMHX34BWFB3SDBA \
  | 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: 25d6eb76f7523ac61efbe06c50ee4308076214d8d9fc64f0b7a4ba3beab250e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5487f656d3d8e6cf0276306bfa9d9b614507685754648e274320bb36719db49d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-02-25T18:27:17Z",
    "title_canon_sha256": "31dcc5c680e61668fbac56974744e7f87716bb34da9dbda5690ac3ceb8907aa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07695",
    "kind": "arxiv",
    "version": 1
  }
}